Computerized Tomography Patents (Class 378/4)
  • Patent number: 12290388
    Abstract: A computer-tomography (CT) imaging system, comprising an imaging data acquisition system. The imaging data acquisition system includes a detector section, an aggregation section, and a storage section. The detection section includes a plurality of detector elements configured to convert radiation into electric signals. The aggregation section aggregates imaging data carried by the electric signals from the detector section. The storage section is arranged in a manner corresponding to the detector elements regarding an output from the detector section and an input to the aggregation section. The storage section includes a predetermined number of non-volatile memories configured to store the imaging data from the corresponding detector elements.
    Type: Grant
    Filed: August 17, 2022
    Date of Patent: May 6, 2025
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventors: James Lawrence Begelman, Kevin Zimmerman, Thomas Labno, John Baumgart, Akira Nishijima, Takashi Ohshima
  • Patent number: 12293569
    Abstract: The present invention relates to training data sets and a system and method for generating training images especially those which are medical images. Especially disclosed is a method of training a machine learning model to recognize movement of a body part in an acquired medical image The machine learning model is trained by varying/modifying a blur convolution kernel constructed with pixels oriented in a direction of the movement; the method including determining at least one motion weighting factor corresponding to a motion time period when the body part is moving during acquisition of the medical image, and using the motion weighting factor to vary/modify the blur convolution kernel.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: May 6, 2025
    Assignee: Volpara Health Technologies Limited
    Inventors: Seymour Francis Knowles-Barley, Ralph Highnam
  • Patent number: 12287491
    Abstract: The invention relates to an optical imaging device.
    Type: Grant
    Filed: March 24, 2023
    Date of Patent: April 29, 2025
    Assignee: AKMIRA OPTRONICS GMBH
    Inventor: Alexander Knüttel
  • Patent number: 12285284
    Abstract: Systems and methods are provided for a deep learning-based digital breast tomosynthesis (DBT) image reconstruction that mitigates limited angular artifacts and improves in-depth resolution of the resulting images. The systems and methods may reduce the sparse-view artifacts in DBT via deep learning without losing image sharpness and contrast. A deep neural network may be trained in a way to reduce training-time computational cost. An ROI loss method may be used for further improvement on the resolution and contrast of the images.
    Type: Grant
    Filed: January 29, 2021
    Date of Patent: April 29, 2025
    Assignee: The General Hospital Corporation
    Inventors: Dufan Wu, Kyungsang Kim, Quanzheng Li
  • Patent number: 12274569
    Abstract: A tomosynthesis scanning system includes an X-ray emitter connected to a first robotic device, and an X-ray detector connected to a second robotic device. The first robotic device moves the emitter along a first spiral trajectory path and, optionally, the second robotic device moves the detector along a second spiral trajectory path during the scanning process. Where both the emitter and detector move, the movement is synchronized. A computer is used to control the first and second robotic devices. In operation, an object to be scanned is positioned between the X-ray emitter and the X-ray detector, then the X-ray emitter is moved along a first spiral path while emitting a photon beam at the X-ray detector and allowing the photon beam to pass through the object before reaching the X-ray detector. Attenuation of the photon beam reaching the X-ray detector is measured and an image is produced based on the measured attenuation of the photon beam.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: April 15, 2025
    Assignee: Orimtech, Ltd.
    Inventors: Boris S. Goldberg, Serguei Gouzeev
  • Patent number: 12276763
    Abstract: A method for processing data relating to a radiological examination of a patient by way of a determining device, comprises the steps of acquiring doses (Ci, ti) measured at a plurality of times ti, storing these time-stamped measurements of radiation doses, and acquiring at least one DICOM digital file containing information on the examination, wherein the method comprises the following steps: acquiring and storing at least one DICOM digital file delivered by the tomograph during or after a tomography; acquiring and storing time-stamped measurements of the doses detected via a scintillating fiber placed on the table, and time-stamped movements of the table; interpolating the measurements (Ci, ti) with data of the image (DICOM) in a common interpolated space and constructing a table (Ck, DICOMk) in the interpolated space; and determining a table of the average dose levels Tz in each slice T depending on the data (DICOMk, Ck).
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: April 15, 2025
    Assignees: Fibermetrix, Alara Expertise
    Inventors: Mélodie Munier, Fanny Carbillet, Pierre-Benoît Prudhomme, Nicolas Guillochon
  • Patent number: 12268544
    Abstract: A medical system according to an embodiment is a system in which at least one medical image diagnosis apparatus and a server are connected via a network and the medical system includes a storage circuit, a processing circuit, and a display circuit. The storage circuit stores information on examinations that are performed by the at least one medical image diagnosis apparatus. The processing circuit generates proposal information based on information on the examinations. The display circuit displays the proposal information.
    Type: Grant
    Filed: May 5, 2023
    Date of Patent: April 8, 2025
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Keisuke Oishi
  • Patent number: 12263027
    Abstract: A scanning apparatus (110), a medical image obtaining method, and a medical image obtaining system (100) are provided. The scanning apparatus (110) comprises a gantry, a controller, a C-shaped arm, a radiation source (112), and a detector (113). The radiation source (112) and the detector (113) are arranged at both ends of the C-shaped arm. The C-shaped arm is connected to the gantry. The controller is configured to control a motion of the gantry to drive the C-shaped arm to move so as to scan a target object.
    Type: Grant
    Filed: November 9, 2022
    Date of Patent: April 1, 2025
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Yang Tang, Kai Cui, Jing Yan, Guanji Leng, Lu Chen, Juan Feng, Haihua Zhou, Zhou Yuan, Le Yang
  • Patent number: 12254586
    Abstract: Examples of the present disclosure describe systems and methods for an auto-focus tool for multimodality image review. In aspects, an image review system may provide for the display of a set of medical images representing one or more imaging modalities. The system may also provide an auto-focus tool that may be used during the review of the set of medical images. After receiving an instruction to activate the auto-focus tool, the system may receive a selection of an ROI in at least one of the images in the set of medical images. The auto-focus tool may identify the location of the ROI within the image and use the identified ROI location to identify a corresponding area or ROI in the remaining set of medical images. The auto-focus tool may orient and display the remaining set of medical images such that the identified area or ROI is prominently displayed.
    Type: Grant
    Filed: September 7, 2022
    Date of Patent: March 18, 2025
    Assignee: Hologic, Inc.
    Inventors: Herschel A. Solis, Calvin J. Wong
  • Patent number: 12239472
    Abstract: A system and method for generating a computed tomography (CT) image of an object includes establishing a narrow-spectrum high-energy bin and other bins with wider-spectrum and lower-energies and acquiring a first dataset using the narrow-spectrum high-energy bin. The method also includes acquiring second or more datasets using the wide-spectrum, low-energy bins, reducing data attributable to scatter from the second or more datasets using the first dataset to create reduced-scatter datasets, and reconstructing CT images of the object from the reduced-scatter datasets.
    Type: Grant
    Filed: October 23, 2022
    Date of Patent: March 4, 2025
    Assignee: WISCONSIN ALUMNI RESEARCH FOUNDATION
    Inventors: Guang-Hong Chen, Ran Zhang, Ke Li
  • Patent number: 12226252
    Abstract: An evaluation apparatus according to an embodiment includes processing circuitry. On the basis of performance information related to performance of a medical diagnostic imaging device and numerical information related to at least one evaluation item, the processing circuitry makes an evaluation of a first imaging plan used by the medical diagnostic imaging device, the numerical information conforming to a guideline related to imaging plans. On the basis of a result of the evaluation, the processing circuitry generates, from the first imaging plan, a second imaging plan conforming to the guideline. The processing circuitry outputs the second imaging plan.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: February 18, 2025
    Assignee: CANON MEDICAL SYSTEMS CORPORATION
    Inventor: Kazuki Gatayama
  • Patent number: 12229896
    Abstract: A method includes the steps of receiving a three-dimensional input model of an underground tunnel system of a worksite, determining an initial first location in the input model for a virtual probe, determining distances between the first location and tunnel walls on the basis of the input model; determining tunnel heading on the basis of processing the determined distances, relocating the virtual probe at a second location in the input model along with the determined tunnel heading, and generating a logical tunnel model indicative of path of the virtual probe travelling in the input model, on the basis of determined locations of the virtual probe being relocated in the input model.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: February 18, 2025
    Assignee: Sandvik Mining and Construction Oy
    Inventor: Pekka Martikainen
  • Patent number: 12229963
    Abstract: A computer-implemented method of segmenting a reconstructed volume of a region of patient anatomy includes: determining an anatomical region associated with the reconstructed volume; detecting one or more metal objects disposed in an initial 3D metal object mask associated with the reconstructed volume; for each of the one or more metal objects disposed in the initial 3D metal object mask, determining a volume associated with the metal object; determining a value for at least one segmentation parameter based on the anatomical region and on the volume associated with the one or more metal objects; and generating a final 3D metal object mask associated with the reconstructed digital volume using the value for the segmentation parameter.
    Type: Grant
    Filed: December 9, 2021
    Date of Patent: February 18, 2025
    Assignee: SIEMENS HEALTHINEERS INTERNATIONAL AG
    Inventors: Igor Peterlik, Adam Michal Strzelecki, Dieter Marc Seghers, Mathieu Plamondon, Mathias Lehmann, Pascal Paysan, Alexander Heinz
  • Patent number: 12220272
    Abstract: Methods and systems are provided for extracting cardiac frequency angiographic phenomena for an unconstrained vascular object from an angiographic study. In one example, a computer may obtain a series of angiographic image frames obtained at a rate faster than cardiac frequency. Each image frame may comprise a plurality of pixels, and each pixel may have a corresponding intensity. The computer may apply an optical flow technique to the angiographic image frames to generate a plurality of paths corresponding to a displacement of respective pixels from image frame to image frame. The computer may further generate a spatiotemporal reconstruction of cardiac frequency angiographic phenomena based on the plurality of paths and the corresponding intensities associated with respective pixels of the paths, and output for display the spatiotemporal reconstruction of cardiac frequency angiographic phenomena in one or more images.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: February 11, 2025
    Assignee: Angiowave Imaging, Inc.
    Inventors: William E. Butler, Hector Andrade-Loarca
  • Patent number: 12213823
    Abstract: An imaging device for obtaining 360-degree images of an anatomical feature of a patient or of another object includes an open ring having a first end, a second end, and an axis, the open ring defining an outer arc and an inner arc; a support arm configured to support the open ring and to rotate the open ring about the axis; a track extending along the open ring; a source movably disposed on the track and operable to generate signals useful for imaging; and a detector movably disposed on the track, the detector operable to detect signals generated by the source. Movement of the source and detector along the track, coupled with rotation of the open ring about the axis, enables the source and detector to travel at least 360 degrees about the axis.
    Type: Grant
    Filed: December 4, 2023
    Date of Patent: February 4, 2025
    Assignee: Medtronic Navigation, Inc.
    Inventors: David A. Garlow, Elizabeth A. Levasseur, John T. Hickey
  • Patent number: 12207956
    Abstract: The computed tomography device has a gantry with an opening and a radiation protection apparatus for covering the opening. The radiation protection apparatus includes a radiation protection cover and a pivoting apparatus, wherein an object under examination may be inserted into the opening along a system axis of the gantry when the radiation protection cover is in a first position relative to the gantry. The radiation protection cover is pivotably mounted relative to the gantry about a pivot axis by the pivoting apparatus such that a first pivoting motion of the radiation protection cover about the pivot axis enables the radiation protection cover to be lowered relative to the gantry from the first position to a second position. The computed tomography device may furthermore include at least one of a lighting system or a camera system.
    Type: Grant
    Filed: September 20, 2022
    Date of Patent: January 28, 2025
    Assignee: SIEMENS HEALTHINEERS AG
    Inventors: Steffen Giebel, Jens Fehre, Marco Koehler, Hans-Juergen Mueller
  • Patent number: 12201854
    Abstract: Systems, devices, and methods for dosimetric verification of radiation therapy treatments by selective evaluation of measurement points. Systems, methods, and computer program-products for providing dosimetric verification of radiation therapy treatments by evaluating measurement points using different evaluation criteria.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: January 21, 2025
    Assignee: SIEMENS HEALTHINEERS INTERNATIONAL AG
    Inventors: Janne Nord, Lasse Heikki Toimela
  • Patent number: 12205253
    Abstract: Systems and methods are provided for computed tomography (CT) imaging. In one embodiment, a method comprises adaptively blending at least two input image volumes with different spatially-variant noise characteristics to generate an output image volume with uniform noise throughout the output image volume. In this way, images may be reconstructed from projection data with data redundancy without introducing image artifacts from stitching images or variance in image noise due to the data redundancy.
    Type: Grant
    Filed: October 3, 2023
    Date of Patent: January 21, 2025
    Assignee: GE Precision Healthcare LLC
    Inventors: Brian Edward Nett, Jed Douglas Pack, Zhye Yin, Jie Tang
  • Patent number: 12178624
    Abstract: A computed tomography device comprises: a gantry with an opening and a radiation protection apparatus configured to cover the opening, wherein the opening is configured to receive an examination object introduced into the opening along a system axis of the gantry; wherein the radiation protection apparatus has a radiation protection curtain, a curtain mounting and a pivot apparatus; wherein the curtain mounting has a bar-shaped area; wherein an upper edge of the radiation protection curtain is attached to the bar-shaped area such that the radiation protection curtain is stretched along the bar-shaped area and hangs down from the bar-shaped area; and wherein the curtain mounting is pivotably supported relative to the gantry about a pivot axis via the pivot apparatus.
    Type: Grant
    Filed: September 28, 2022
    Date of Patent: December 31, 2024
    Assignee: SIEMENS HEALTHINEERS AG
    Inventors: Stefan Lautenschlaeger, Roman Achleitner
  • Patent number: 12181424
    Abstract: Described herein are X-ray-based CT systems, specifically those with a stationary X-ray source and a moving object of interest, and methods of using the same, that address limitations in current stationary-source CT, such as scatter contamination and limited scan trajectories. The described systems include a pre-object collimator to form a narrow beam. Scatter contamination is reduced to less than 5% of acquired projections, resulting in high-quality CT images with minimal artifacts, improving diagnostic accuracy and measurement precision. The described system also allows for nonplanar trajectories, providing complete sampling of an object along multiple degrees of freedom.
    Type: Grant
    Filed: July 24, 2024
    Date of Patent: December 31, 2024
    Assignee: MALCOVA, Inc.
    Inventors: Peymon Mirsaeid Ghazi, Tara Reneé Ghazi, Michael Hyon-Min Kim, Erik William Chell
  • Patent number: 12178622
    Abstract: A CT apparatus includes a radiation source that emits radiation, a radiation detector that detects the radiation, an annular frame to which the radiation source and the radiation detector are attached and in which a subject is positioned in a bore, and three columns that hold the frame to be movable up and down in a vertical direction.
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: December 31, 2024
    Assignee: FUJIFILM CORPORATION
    Inventors: Takashi Tajima, Masakazu Fukuyo, Sho Shimizukawa, Takeyasu Kobayashi, Hisatsugu Horiuchi, Naoyuki Nishino
  • Patent number: 12175636
    Abstract: For reconstruction in medical imaging, user control of a characteristic (e.g., noise level) of the reconstructed image is provided. A machine-learned model alters the reconstructed image to enhance or reduce the characteristic. The user selected level of characteristic is then provided by combining the reconstructed image with the altered image based on the input level of the characteristic. Personalized or more controllable impression for medical imaging reconstruction is provided without requiring different reconstructions.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: December 24, 2024
    Assignee: Siemens Healthineers AG
    Inventors: Mahmoud Mostapha, Boris Mailhe, Marcel Dominik Nickel, Gregor Körzdörfer, Simon Arberet, Mariappan S. Nadar
  • Patent number: 12169147
    Abstract: Disclosed are a testing system and method under fluid-solid coupling effects. A dynamic stress field during fluid flow, deformation of a porous rock framework, real-time evolution of the stress field and deformation of a fluid-solid interface under fluid-solid coupling effects can be obtained, on the basis of a collected photo-elastic stripe image and a surface deformation image. A stress field of a solid framework and fluid in porous rock, and a strain field of the solid framework and the fluid-solid interface under fluid-solid coupling effects can be visually and quantitatively displayed by means of a display device.
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: December 17, 2024
    Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING
    Inventors: Yang Ju, Jiangtao Zheng, Zhangyu Ren, Wenbo Gong
  • Patent number: 12161499
    Abstract: Systems and methods for four-dimensional CT scan are provided. The methods may include determining a first region of a subject and a second region. A movement of the subject may occur within the second region. The methods may further include generating a first image set by performing, based on a first operation parameter corresponding to a first scan, the first scan on the first region of the subject, and generating a second image set by performing, based on a second operation parameter corresponding to a second scan, the second scan on a second region of the subject. The methods may further include obtaining movement information corresponding to the movement of the subject and determining a final image set based on the first image set, the movement information, and the second image set.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: December 10, 2024
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Buliang Sun, Wei Zhang, Jonathan Maltz
  • Patent number: 12161296
    Abstract: A system includes a processor and a display. The processor is configured to: (a) receive an optical image of an organ of a patient, (b) receive an anatomical image of the organ, (c) receive, from a position tracking system (PTS), a position signal indicative of a position of a medical instrument treating the organ, (d) register the optical image and the anatomical image in a common coordinate system, and (e) estimate the position of the medical instrument in at least one of the optical image and the anatomical image. The display is configured to visualize the medical instrument overlaid on at least one of the optical image and the anatomical image.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: December 10, 2024
    Assignee: Johnson & Johnson Surgical Vision, Inc.
    Inventors: Assaf Govari, Vadim Gliner
  • Patent number: 12138101
    Abstract: Provided is an X-ray image apparatus. The X-ray imaging apparatus include an imaging body and a control circuit. The image body acquires X-ray image data of an object and includes an X-ray generation device and an X-ray sensing device. The X-ray generating device and the X-ray sensing device are disposed to face each other with the object in between. The control circuit reconfigures an X-ray image of the object based on the X-ray image data, acquire size information of the object, rotate the X-ray generation device and the X-ray sensing device about a rotation axis between the X-ray generation device and the X-ray sensing device, and move the object along a direction of the rotation axis with respect to the X-ray generation device and the X-ray sensing device when acquiring the X-ray image data.
    Type: Grant
    Filed: August 31, 2021
    Date of Patent: November 12, 2024
    Assignees: VATECH Co., Ltd., VATECH EWOO Holdings Co., Ltd.
    Inventors: Tae Hee Han, Yong Joo Yang, Sung Hwan Lim
  • Patent number: 12133756
    Abstract: A CPU acquires projection images captured at each irradiation position in a state in which a marker is disposed and set irradiation positions set as the irradiation positions of the projection images, generates a tomographic image from the projection images using the set irradiation positions, derives the coordinates of a three-dimensional position where the marker is disposed from the tomographic image, derives a first two-dimensional position of the marker projected onto the projection plane from the set irradiation positions and the coordinates of the three-dimensional position of the marker, and estimates the irradiation positions on the basis of the first two-dimensional position and a second two-dimensional position of the marker in the projection plane which is specified from a marker image indicating the marker included in each of the projection images.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: November 5, 2024
    Assignee: FUJIFILM CORPORATION
    Inventor: Wataru Fukuda
  • Patent number: 12133701
    Abstract: The method includes obtaining a distance value of a guide wire from an inner wall of cavity and a resistance value of the inner wall of cavity to the guide wire when the guide wire moves in the cavity and controlling the guide wire for corresponding movement according to a relationship between the distance value and a predetermined distance threshold value, and/or the relationship between the predetermined resistance threshold value. The alarm strategy through image and resistance detection multi-dimensionally, lead to low false alarm rate. Automatic error correction by automatic reverse motion avoids the risk of untimely correction in case of danger due to the user's stress during the movement, thus improving the overall automation of movement control of the intervention robot.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: November 5, 2024
    Inventors: Jing Xie, Tao Huang
  • Patent number: 12121381
    Abstract: In some implementations, a device may produce, via an x-ray module, x-rays to be directed towards a body part. The device may detect, via a sensor, the x-rays reflected from the body part. The device may generate, via the sensor, signals based on the x-rays reflected from the body part. The device may generate, via a processor, an x-ray image of the body part based on the first signals. The device may transmit the x-ray image to a server. The device may receive, from the server, a message that indicates a diagnosis associated with the x-ray image. The device may display, via a user interface, the x-ray image and information associated with the diagnosis associated with the x-ray image.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: October 22, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Yashvi Singh, Tanya Khatri, Fatma Arzum Simsek-Ege, Yanni Wang
  • Patent number: 12118694
    Abstract: Systems and methods for improving soft tissue contrast, characterizing tissue, classifying phenotype, stratifying risk, and performing multi-scale modeling aided by multiple energy or contrast excitation and evaluation are provided. The systems and methods can include single and multi-phase acquisitions and broad and local spectrum imaging to assess atherosclerotic plaque tissues in the vessel wall and perivascular space.
    Type: Grant
    Filed: May 17, 2023
    Date of Patent: October 15, 2024
    Assignee: ELUCID BIOIMAGING INC.
    Inventors: Andrew J. Buckler, Changguo Ji, Murali Ayyapillai
  • Patent number: 12109052
    Abstract: Artifacts in a tomographic image of a subject including a cyclically moving object to be treated are reduced. A radiographic imaging device includes: a gantry that is equipped with two sets of radiation sources and detectors which are used in pairs, the gantry rotating the radiation sources and the detectors around a subject; and a reconstruction section that reconstructs a tomographic image of the subject based on multiple projection images generated from output of the detectors. The radiographic imaging device further includes: a phase calculation section; a divide section that divides, on a phase-by-phase basis, first projection image groups of multiple projection images acquired by the first set, and similarly second projection image groups acquired by the second set; and a condition setting section. The reconstruction section reconstructs a tomographic image by use of the first and second projection image groups that are placed in the same phase.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: October 8, 2024
    Assignee: HITACHI HIGH-TECH CORPORATION
    Inventor: Rika Baba
  • Patent number: 12112470
    Abstract: Systems and methods for generating a probabilistic tree of vessels are provided. An input medical image of vessels of a patient is received. Anatomical landmarks are identified in the input medical image. A centerline of the vessels in the input medical image is determined based on the anatomical landmarks. A probabilistic tree of the vessels is generated based on a probability of fit of the anatomical landmarks and the centerline of the vessels. The probabilistic tree of the vessels is output.
    Type: Grant
    Filed: September 29, 2021
    Date of Patent: October 8, 2024
    Assignee: Siemens Healthineers AG
    Inventors: Bogdan Georgescu, Eli Gibson, Thomas Re, Dorin Comaniciu, Florin-Cristian Ghesu, Vivek Singh
  • Patent number: 12100174
    Abstract: Various methods and systems are provided for a medical imaging system. In one embodiment, a method for a projection imaging system includes acquiring a first image of a region of interest (ROI) with the projection imaging system in a first position, determining a three-dimensional (3D) location of an annotation on the first image via a geometric transformation using planes, acquiring a second image of the ROI with the projection imaging system in a second position, determining a location of the annotation on the second image based on the 3D location of the annotation in the first position and a geometry of the second position, and displaying the annotation on the second image in response to an accuracy check being satisfied.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: September 24, 2024
    Assignee: GE PRECISION HEALTHCARE LLC
    Inventors: Régis Vaillant, Maxime Taron, Bastien Guéry
  • Patent number: 12086520
    Abstract: Systems and methods for multi-material mesh generation from fill-fraction voxel model data are discussed. Voxel representations of model data are used to generate robust and accurate multi-material meshes. More particularly, a mesh generation pipeline in a virtual fabrication environment is described that robustly generates high-quality triangle surface and tetrahedral volume meshes from multi-material fill-fraction voxel data. Multi-material topology is accurately captured while preserving characteristic feature edges of the model.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: September 10, 2024
    Assignee: Coventor, Inc.
    Inventors: Daniel Sieger, Kenneth B. Greiner, Daniel Faken, Vincent Baudet, Stéphane Calderon
  • Patent number: 12076174
    Abstract: An angiogram is a study of blood vessels where an angiographic chemical contrast agent is injected while a sequence of images (typically x-rays) are obtained. The contrast pattern on the sequence of images provides information about the vascular anatomy and physiology. The discovery that contrast in blood vessels varies at cardiac frequency in magnitude and phase, which may be visualized as a spatiotemporal reconstruction of cardiac frequency angiographic phenomena, enables a set of processes for increasing the signal to noise ratio or equivalently the informational content of an angiogram. In this invention, the organization of cardiac frequency magnitude and phase enables equivalent information on anatomy and physiology to be obtained with less dose of injected chemical contrast agent, less x-ray dose, and/or less navigation of the injecting catheter within blood vessels.
    Type: Grant
    Filed: February 6, 2020
    Date of Patent: September 3, 2024
    Inventor: William E. Butler
  • Patent number: 12064273
    Abstract: A cone-beam computed tomography (CBCT) method uses a continuous beam and an area detector to carry out fast acquisition of projection data. The acquired projection data are then reconstructed to generate tomographic images. In acquisition of the projection data, a radiation source continuously irradiates a subject with a cone beam of radiation from a plurality of angles and an area detector continuously reads out data. A CBCT system including a source operable to produce a cone beam of radiation and an area detector movable in synchrony with the source to rapidly acquire projection data for CBCT construction is also disclosed.
    Type: Grant
    Filed: January 28, 2022
    Date of Patent: August 20, 2024
    Assignee: Siemens Healthineers International AG
    Inventors: Mathias Lehmann, Reto Ansorge, Manuel Waser, Daniel Morf
  • Patent number: 12064297
    Abstract: Medical software tools platforms utilize a surgical display to provide access to specific medical software tools, such as medically-oriented applications or widgets, that can assist surgeons or surgical team in performing various procedures. In particular, an endoscopic camera may register the momentary rise in the optical signature reflected from a tissue surface and in turn transmit it to a medical image processing system which can also receive patient heart rate data and display relevant anomalies. Changes in various spectral components and the speed at which they change in relation to a source of stimulus (heartbeat, breathing, light source modulation, etc.) may indicate the arrival of blood, contrast agents or oxygen absorption. Combinations of these may indicate various states of differing disease or margins of tumors, and so forth. Also, changes in temperatures, physical dimensions, pressures, photoacoustic pressures and the rate of change may indicate tissue anomalies in comparison to historic values.
    Type: Grant
    Filed: March 6, 2023
    Date of Patent: August 20, 2024
    Inventor: Jack Wade
  • Patent number: 12059237
    Abstract: For decision support based on perfusion in medical imaging, a machine-learned model, such as a model trained with deep learning, generates perfusion examination information from CT scans of the patient. Other information, such as patient-specific information, may be used with the CT scans to generate the perfusion examination information. Since a machine-learned model is used, the perfusion examination information may be estimated from a spatial and/or temporally sparse number of scan shots or amount of CT dose. The results of perfusion imaging may be provided with less than the current, standard, or typical radiation dose.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: August 13, 2024
    Assignee: Siemens Healthineers AG
    Inventors: Pooyan Sahbaee Bagherzadeh, Puneet Sharma
  • Patent number: 12056795
    Abstract: A system for monitored tomographic reconstruction, comprising: an x-ray generator configure to generate x-ray beams for scanning an object; detectors configured to capture a plurality of projections for each scan; at least one hardware processor; and one or more software modules that, when executed by the at least one hardware processor, receive the plurality of projections from the detectors and as each of the plurality of projections is received, generate a partial reconstruction, and make a stopping decision with respect to whether or not another projection should be obtained based on a stopping problem and that defines when a reconstructed image quality is sufficient with respect to the expended cost as determined by a stopping rule.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: August 6, 2024
    Assignee: Smart Engines Service, LLC
    Inventors: Konstantin Bulatovich Bulatov, Marina Valerievna Chukalina, Alexey Vladimirovich Buzmakov, Dmitry Petrovich Nikolaev, Vladimir Viktorovich Arlazarov
  • Patent number: 12051134
    Abstract: The disclosed apparatus, systems and methods relate to a framelet-based iterative algorithm for polychromatic CT which can reconstruct two components using a single scan. The algorithm can have various steps including a scaled-gradient descent step of constant or variant step sizes; a non-negativity step; a soft thresholding step; and a color reconstruction step.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: July 30, 2024
    Assignees: University of Iowa Research Foundation, Rensselaer Polytech Institute, Shandong University, Shandong Public Health Clinical Center
    Inventors: Wenxiang Cong, Ye Yangbo, Ge Wang, Shuwei Mao, Yingmei Wang
  • Patent number: 12045916
    Abstract: Techniques for computed tomography (CT) image reconstruction are presented. The techniques can include acquiring, by a detector grid of a computed tomography system, detector signals for a location within an object of interest representing a voxel, where each detector signal of a plurality of the detector signals is obtained from an x-ray passing through the location at a different viewing angle; reconstructing a three-dimensional representation of at least the object of interest, the three-dimensional representation comprising the voxel, where the reconstructing comprises computationally perturbing a location of each detector signal of the plurality of detector signals within the detector grid, where the computationally perturbing corresponds to randomly perturbing a location of the x-ray within the voxel; and outputting the three-dimensional representation.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: July 23, 2024
    Assignee: THE JOHNS HOPKINS UNIVERSITY
    Inventors: Joseph Webster Stayman, Alejandro Sisniega, Jeffrey H. Siewerdsen
  • Patent number: 12026884
    Abstract: Methods, apparatuses, and systems for surview scans are provided. In one aspect, a method includes: collecting a static image for a subject on a scan bed when it is stationary; determining a scan beginning position and a reference position in the static image; obtaining a first distance between the scan beginning position and the reference position; during a movement of the scan bed, obtaining a video image of the subject in real time; identifying a corresponding reference position in the video image; marking, according to the corresponding reference position and the first distance, a corresponding scan beginning position in the video image; detecting a second distance between the corresponding scan beginning position and a positioning line in the video image; and in response to detecting that the second distance is equal to or less than a predetermined first threshold, starting the surview scan to obtain a surview image.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: July 2, 2024
    Assignee: Neusoft Medical Systems Co., Ltd.
    Inventors: Shuangxue Li, Jun Yu, Wei Li
  • Patent number: 12022228
    Abstract: Digital Tomosynthesis (DT) is a type of limited angle tomography providing the benefits of 3D imaging. Much like Computerized Tomography (CT), DT allows greater detection of 3D structures by viewing one slice at a time. In contrast to CT, the DT projection dataset is incomplete, which violates the tomographic sufficiency conditions and results in limited angle artefacts in the reconstructed images. The present invention provides a method of producing a tomogram in which reconstruction is performed along lines on the x-ray detector panel 20 defined by a point on the detector panel 20 closest to a point location of the x-ray emitter 10, to a location of a respective pixel on the perimeter of the x-ray detector panel 20. In this way, artefact reduction is achieved, particularly at higher cone beam angles, and at lower stand-off distances.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: June 25, 2024
    Assignee: ADAPTIX LTD
    Inventor: Vadim Soloviev
  • Patent number: 12008705
    Abstract: The majority of image reconstruction algorithms are common to DT and CT, and require reconstruction volume allocation and are based on ray tracing techniques. Reconstructed three-dimensional images become available only after the entire volume is processed and the algorithm completes. The present invention performs reconstruction on a slice-by-slice basis, instead of waiting for completion of the algorithm by back-projecting each pixel in each attenuation image towards the emitter that generated that image, onto a selected reconstruction slice and determining a proportion of overlap with grid cells in the slice to obtain weighting factors in order to calculate an average back-projected intensity for each grid cell in the selected reconstruction slice.
    Type: Grant
    Filed: February 15, 2022
    Date of Patent: June 11, 2024
    Assignee: ADAPTIX LTD
    Inventor: Vadim Soloviev
  • Patent number: 11998382
    Abstract: In order to sufficiently capture spatial distortion specific to an X-ray CT device and evaluate the three-dimensional shape measurement accuracy of the X-ray CT device, in a utensil, by attaching support rods fixing spheres to the tip thereof and having different lengths to a base spheres are arranged in an XYZ space on the base. On a flat surface on the top of the base, the support rods supporting the spheres and having different lengths are arranged at predetermined intervals. In doing so, the spheres are arranged in the XYZ space respectively at appropriate inter-sphere distances.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: June 4, 2024
    Assignees: Shimadzu Corporation, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Taketo Kishi, Makoto Sato, Toshiyuki Takatsuji, Makoto Abe, Hiroyuki Fujimoto
  • Patent number: 12002130
    Abstract: A computer-implemented method is for artifact correction during a reconstruction of at least one slice image from at least one projection image. The at least one projection image includes a plurality of pixels, each pixel including a pixel value. The method includes determining at least one corrected projection image based on the at least one projection image via a computing circuit; reconstructing the at least one slice image based on the at least one corrected projection image; and providing the at least one slice image. The determining includes determining an average pixel value in at least one subarea of the at least one projection image, a correction value by multiplying the average pixel value by a scatter factor, and a plurality of corrected pixel values by subtracting the correction value from the plurality of pixel values. The corrected projection image includes pixels including the plurality of corrected pixel values.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: June 4, 2024
    Assignee: Siemens Healthineers AG
    Inventor: Bernd Schreiber
  • Patent number: 11988616
    Abstract: A system and method can determine one or more CT scanner calibration parameters from a plurality of calibration object projections in a plurality of radiographs.
    Type: Grant
    Filed: February 16, 2023
    Date of Patent: May 21, 2024
    Assignee: James R. Glidewell Dental Ceramics, Inc.
    Inventors: Sergey Nikolskiy, Fedor Chelnokov, Grant Karapetyan
  • Patent number: 11989803
    Abstract: Presented herein are systems and methods for tomographic imaging of a region of interest in a subject using short-wave infrared light to provide for accurate reconstruction of absorption maps within the region of interest. The reconstructed absorption maps are representations of the spatial variation in tissue absorption within the region of interest. The reconstructed absorption maps can themselves be used to analyze anatomical properties and biological processes within the region of interest, and/or be used as input information about anatomical properties in order to facilitate data processing used to obtain images of the region of interest via other imaging modalities. For example, the reconstructed absorption maps may be incorporated into forward models that are used in tomographic reconstruction processing in fluorescence and other contrast-based tomographic imaging modalities.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: May 21, 2024
    Assignee: PerkinElmer Health Sciences, Inc.
    Inventor: Ali Behrooz
  • Patent number: 11989881
    Abstract: A method and system for acquiring scan data. The system includes a processing device and an imaging device. The processing device is configured to generate a target protocol group corresponding to a plurality of target bed positions by adjusting, based on a reference image, at least one parameter of an initial protocol group. The target protocol group includes a target general protocol for localizing the plurality of target bed positions and a plurality of target primary protocols for localizing each of the plurality of target bed positions. The imaging device is configured to acquire scan data by scanning the object based on the target protocol group.
    Type: Grant
    Filed: April 18, 2022
    Date of Patent: May 21, 2024
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Cuifang Li, Shihong Han, Gongze Zhu
  • Patent number: 11980493
    Abstract: An image processing apparatus includes a processor programmed to obtain a first radiation image of a subject captured from a first direction, obtain a second radiation image of the subject captured from a second direction that intersects the first direction, and either correct one of the first radiation image and the second radiation image based on positional information of a device for capturing the one of the first radiation image and the second radiation image, or correct another one of the first radiation image and the second radiation image based on information on a position of a specific region of the subject obtained from the one of the first radiation image and the second radiation image.
    Type: Grant
    Filed: July 16, 2021
    Date of Patent: May 14, 2024
    Assignees: Ricoh Company, Ltd., National University Corporation Tokyo Medical and Dental University
    Inventors: Taishi Watanabe, Akira Kinoshita, Masahiro Takada, Shigenori Kawabata