Abstract: One or more devices, systems, methods and storage mediums for performing optical coherence tomography (OCT) while detecting one or more lumen edges, one or more stent struts, and/or one or more artifacts are provided. Examples of applications include imaging, evaluating and diagnosing biological objects, such as, but not limited to, for Gastro-intestinal, cardio and/or ophthalmic applications, and being obtained via one or more optical instruments, such as, but not limited to, optical probes, catheters, capsules and needles (e.g., a biopsy needle). Preferably, the OCT devices, systems methods and storage mediums include or involve a method, such as, but not limited to, for removing the detected one or more artifacts from the image(s).

Abstract: An impedance location of an electrode in an impedance based coordinate system and a magnetic location of a magnetic position sensor in a magnetic based coordinate system can be received. A transformed impedance location of the magnetic position sensor can be computed. A difference between the transformed impedance location of the magnetic position sensor and the magnetic location of the magnetic position sensor can be determined. A magnitude of the difference between the impedance location of the magnetic position sensor and the magnetic location of the magnetic position sensor can be computed. A statistical significance of the difference between the transformed impedance location of the magnetic position sensor and the magnetic location of the magnetic position sensor can be computed. A determination can be made that an impedance shift exists if the magnitude of the difference exceeds a threshold and a statistical significance of the difference exceeds a threshold.

Abstract: Breast securement devices for imaging systems are provided. The securement device can include a breast tray configured to support a patient's breast. In one example, one or more walls extend from the breast tray to receive the patient's breast. In another example, a pair of arms pivotably extend at least partially over the breast tray to receive the patient's breast therebetween. In still another example, a membrane covers the breast tray and the patient's breast and selectively couples to the breast tray via a suction force. In yet another example, a paddle includes a plurality of flexible fingers that contour to the patient's breast, or includes an array of pins that independently slide within of the paddle and contour to the patient's breast, or includes a bladder having non-Newtonian fluid. Additionally or alternatively, a sling may receive the patient's breast and support the breast from below.

Abstract: The present application discloses a cerebral perfusion state classification apparatus and method, a device, and a storage medium. The method includes: acquiring, by a transceiving module, cervical blood flow data from an ultrasound data collecting device; determining, by a processor, cerebral perfusion data corresponding to the cervical blood flow data based on the cervical blood flow data and a mapping relationship between the cervical blood flow data and the cerebral perfusion data, and classifying cerebral perfusion states of a plurality of brain regions based on blood perfusion characteristics of the plurality of brain regions in the cerebral perfusion data.

Abstract: Navigation and simulation systems and methods for minimally invasive therapy in which the navigation system imports a planning method using patient specific preoperative images. The navigation system uses intraoperative imaging during the medical procedure to update the preoperative images and provides images of tracked surgical tools along the surgical path prepared from the preoperative images.

Abstract: A method for detecting and creating magnetic resonance imaging anatomical outlines of a subject, including acquiring magnetic resonance imaging signals of a selected region of interest of the subject's anatomy, processing the magnetic resonance imaging signals to determine image pixel intensity. calculating a mean intensity value associated with the center location of the selected region of interest, and determining concentric interior and exterior anatomical outlines surrounding the center location. Image pixels with an intensity value greater than the mean intensity value by a first threshold amount are designated as part of the interior anatomical outline. Image pixels with an intensity value less than the mean intensity value by a second threshold amount are designated as part of the exterior anatomical outline.

Abstract: A sublingual microcirculation detection device and a sublingual microcirculation detection system are provided. The sublingual microcirculation detection device includes a base, a first side wall structure, a second side wall structure, an ultrasonic probe, a saliva brush, a plurality of near-infrared lamps, a camera, a main controller on a side surface of the base, and a probe handle fixed to a top surface of the base. The first and second side wall structures are fixed to a bottom surface of the base. The ultrasonic probe is arranged on the first side wall structure, and the saliva brush is arranged on the second side wall structure. The plurality of near-infrared lamps and the camera are arranged on the bottom surface of the base; and the main controller is electrically connected to the plurality of near-infrared lamps, the camera, and the ultrasonic probe.

Abstract: Methods and systems for determining whether brain tissue is indicative of a disorder, such as a neurodegenerative disorder, are provided. The methods and systems generally utilize data processing techniques to assess a level of congruence between measured parameters obtained from magnetic resonance imaging (MRI) data and simulated parameters obtained from computational modeling of brain tissues.

Abstract: A method of measuring column interruption duration in a selected lower leg vein of a patient without undertaking dorsal foot measurements. The method includes the step of selecting a vein in the lower leg to be examined and selecting a valve in the vein to be observed. The valve's actions will be observed with Duplex ultrasound and timed. The method then effects calf muscle ejection and observing the action of the selected valve in the respective vein selected. The valve can be observed for opening or closing action, or action of blood flow (or lack of flow) through the valve. The CID is then determined calculated based on the timing of events observed with ultrasound. The ultrasound can be Duplex ultrasound; invasive measurements are not required.

Abstract: An ultrasound imaging apparatus includes a processor including hardware. The processor is configured to: generating first frequency spectrum data and second frequency spectrum data with regard to a first ultrasound signal and a second ultrasound signal, respectively; generating first ultrasound image data based on the first ultrasound signal; generating second ultrasound image data based on the second ultrasound signal; estimating a displacement amount including at least one of a positional change amount and a rotation angle of a subject depicted in the first ultrasound image data with respect to the subject depicted in the second ultrasound image data; correcting the first frequency spectrum data in accordance with the estimated displacement amount; calculating differential feature data by using the corrected first frequency spectrum data and the second frequency spectrum data; and generating analysis image data to which color information corresponding to the differential feature data is applied.

Abstract: Systems for detecting when catheter electrodes enter into and exit from an introducer are disclosed. In one form, a system detects a relative position of a catheter (comprising a marker band and an electrode) and an introducer (comprising a proximity sensor adapted to sense the marker band), while the catheter and introducer are in a human body. The system may comprise an electronic control unit to analyze signals from the catheter and/or the introducer, to determine whether the catheter electrode is within the introducer; and to disregard data collected from the electrode when that electrode is in the introducer. The sensor may be on the catheter and the sensed element may be on the introducer. The sensed element may comprise one or several marker bands. A marker band may be applied during the manufacture of a medical device or during its use and is any element capable of electromagnetic detection.

Abstract: A method for positioning key features of a lens based on ocular B-mode ultrasound images includes: acquiring and preprocessing the ocular B-mode ultrasound images to obtain a preprocessed B-mode ultrasound image, eyeball coordinates and lens coordinates; sending the preprocessed B-mode ultrasound image, the eyeball coordinates and the lens coordinates into a trained target detection network YOLOv3 to obtain eyeball position images and lens position images; substituting the eyeball position images and the lens position images into a trained feature extraction network group to obtain image features and feature coordinates corresponding to the eyeball position images and the lens position images, respectively; substituting the image features into a trained collaborative learning network to screen key image features; and marking a feature coordinate corresponding to the key image features on the ocular B-mode ultrasound images to complete positioning the key features of the lens.

Abstract: A measurement sensor package and a measurement sensor reduce susceptibility to noise and enable highly accurate measurement. A measurement sensor package includes a substrate. The substrate includes a first recess including a first bottom surface on which a light emitter is mountable, and a first step surface having a first connection pad thereon, a second recess including a second bottom surface on which a light receiver is mountable, and a second step surface having a second connection pad thereon. In a direction connecting a center of the first bottom surface and a center of the second bottom surface in a plan view, the first step surface is located outward from the first bottom surface and the second step surface is located outward from the second bottom surface.

Abstract: An exemplary method includes receiving images of a site captured at a same time by a camera, generating, based one or more of the images, a monochromatic image, generating, based on one or more of the images, an alternate image representative of an alternate imaging characteristic of the site, and displaying the displaying the monochromatic image combined with the alternate image, the alternate image being highlighted relative to the monochromatic image.

Abstract: A location of a number of fiducial points can be computed. The fiducial points can include impedance locations of an electrode disposed on a catheter in an impedance based coordinate system and magnetic locations of a magnetic position sensor disposed on the catheter in a magnetic based coordinate system. The impedance location of the electrode in the impedance based coordinate system can be transformed into a transformed impedance location of the electrode in the magnetic based coordinate system. A magnetic location of the electrode in the magnetic based coordinate system can be determined. A determination of whether an impedance shift exists between the transformed impedance location of the electrode in the magnetic based system and the magnetic location of the electrode in the magnetic based system can be made. An electromagnetic dynamic registration can be generated between the impedance based coordinate system and the magnetic based coordinate system based on the impedance shift.

Abstract: An ultrasound imaging system includes a processor programmed to generate an anatomy image and a number of needle frames at different transmit beam angles. The system analyzes the data in the needle frames and selects segments therein that are identified as likely representing an interventional instrument. Data from one or more needle frames are blended with the data for the anatomy image of the tissue to create a composite image of the tissue and the interventional instrument.

Abstract: An ultrasound imaging system includes a processor programmed to generate an anatomy image and a number of needle frames at different transmit beam angles. The system analyzes the data in the needle frames and selects segments therein that are identified as likely representing an interventional instrument. Data from one or more needle frames are blended with the data for the anatomy image of the tissue to create a composite image of the tissue and the interventional instrument.

Abstract: A tilted needle biopsy assembly is provided for mounting on an x-ray system. Because the biopsy needle is angled relative to at least one of the detector and the x-ray source, x-ray imaging may be performed during the biopsy procedure without interference by the biopsy device. The angled biopsy needle additionally allows improved access to the axilla and chest wall of the patient. The stereotactic biopsy device of the present invention may be coupled to any x-ray system, whether upright or prone, including but not limited to mammography systems, tomosynthesis systems, and combination mammography/tomosynthesis systems. The system flexibly supports the use of any mode of image capture (i.e., scout, two dimensional mammogram, three-dimensional reconstructed volume) for either or both target visualization and target localization. With such an arrangement, a needle biopsy assembly having improved patient coverage is provided for use with a variety of different x-ray imaging platforms.

Abstract: A method and an apparatus for measuring a time-varying change in an amount of blood in a tissue include exciting a fluorescence agent in the blood, acquiring a time-varying light intensity signal during a pulsatile flow of the blood through the tissue volume, the pulsatile flow having a systolic and a diastolic phase resembling a conventional photoplethysmogram, and processing the acquired signal by applying a modified Beer-Lambert law to obtain the measurement of the time-varying change in the amount of blood in the tissue volume. The instantaneous molar concentration of the fluorescence agent is determined by utilizing a concentration-mediated change in a fluorescence emission spectrum of the fluorescence agent.

Abstract: A location of a number of fiducial points can be computed. The fiducial points can include impedance locations of an electrode disposed on a catheter in an impedance based coordinate system and magnetic locations of a magnetic position sensor disposed on the catheter in a magnetic based coordinate system. The impedance location of the electrode in the impedance based coordinate system can be transformed into a transformed impedance location of the electrode in the magnetic based coordinate system. A magnetic location of the electrode in the magnetic based coordinate system can be determined. A determination of whether an impedance shift exists between the transformed impedance location of the electrode in the magnetic based system and the magnetic location of the electrode in the magnetic based system can be made. An electromagnetic dynamic registration can be generated between the impedance based coordinate system and the magnetic based coordinate system based on the impedance shift.