Patents by Inventor Joseph Manak
Joseph Manak has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10346984Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.Type: GrantFiled: July 11, 2018Date of Patent: July 9, 2019Assignee: Canon Medical Systems CorporationInventors: Yiemeng Hoi, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
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Publication number: 20190139272Abstract: An apparatus and method are provided for computed tomography (CT) imaging to reduce artifacts due to objects outside the field of view (FOV) of a reconstructed image. The artifacts are suppressed by using an iterative reconstruction method to minimize a cost function that includes a de-emphasis operator. The de-emphasis operator operates in the data domain, and minimizes the contributions of data inconsistencies arising from attenuation due to objects outside the FOV. This can be achieved by penalizing images that manifest indicia of artifacts due to outside objects especially those outside objects have high-attenuation densities and minimizing components of the data inconsistency likely attributable to the outside object.Type: ApplicationFiled: November 2, 2018Publication date: May 9, 2019Applicants: THE UNIVERSITY OF CHICAGO, CANON MEDICAL SYSTEMS CORPORATIONInventors: Xiaochuan Pan, Zheng Zhang, Dan Xia, Yu-Bing Chang, Jingwu Yao, Joseph Manak
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Publication number: 20190076101Abstract: A method and apparatus is provided to generate a multiresolution image having at least two regions with different pixel pitches. The multiresolution image is reconstructed using projection data having various pixel pitches corresponding to the pixel pitches of the multiresolution image. By using a higher resolution inside regions of interest (ROIs) in both the image and projection domains and lower resolution outside the ROIs, fast image reconstruction can be performed while avoiding truncation artifacts, which result imaging is limited to an ROI excluding attenuation regions. Further, those regions of greater clinical relevance and greater structural variance within the reconstructed images can be selected to be within the ROIs to improve the clinical benefit of the multiresolution image. The multiresolution image can be reconstructed using an iterative reconstruction method in which the high- and low-resolution regions are uniquely evaluated.Type: ApplicationFiled: September 13, 2017Publication date: March 14, 2019Applicants: The University of Chicago, Toshiba Medical Systems CorporationInventors: Xiaochuan Pan, Zheng Zhang, Dan Xia, Yu-Bing Chang, Joseph Manak
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Patent number: 10163209Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.Type: GrantFiled: November 23, 2016Date of Patent: December 25, 2018Assignee: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Yiemeng Hoi, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
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Publication number: 20180330503Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.Type: ApplicationFiled: July 11, 2018Publication date: November 15, 2018Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Yiemeng HOI, Joseph Manak, Kazumasa Arakita, Jingwu Yao, James Begelman, Victor Gorin
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Patent number: 10098603Abstract: An apparatus for generating corrected X-ray projection data from target X-ray projection data obtained by performing an X-ray scan with a detector having an anti-scatter grid, and a method for creating a lookup table and generating corrected X-ray projection data. The apparatus includes a detector configured to detect incident X-rays, an anti-scatter grid configured to suppress scattered radiation incident on the detector, and an X-ray source configured to irradiate the target with X-rays. Processing circuitry is configured to cause the X-ray source to scan, using a peak kilovoltage (kVp), the target to produce the target projection data, determine a patient-to-detector distance (PDD) and an area irradiated (FS), transform the target projection data into a spatial frequency domain, determine scatter values by accessing the lookup table using the kVp, PDD, and FS values, and subtract the scatter values from the frequency components to obtain the corrected X-ray projection data.Type: GrantFiled: April 15, 2016Date of Patent: October 16, 2018Assignee: Toshiba Medical Systems CorporationInventors: Joseph Manak, Amit Jain, Hisato Takemoto
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Publication number: 20180235564Abstract: A method and apparatus is provided to generate two X-ray projection images, using different focal-spot sizes in the X-ray source. The large and small focal-spot images have different image qualities (e.g., different signal-to-noise rations (SNR) and different resolution). The two images are combined, in either the spatial or frequency domains, to generate a combined image, exhibiting the best attributes of the constitutive small and large focal-spot images. In the spatial domain, change regions and uniform regions are determined based on spatial variations within the images, and the superposition generating the combined image weights the small focal-spot image more in the change regions and the large focal-spot image more in the uniform regions. In the frequency domain, the combined image superimposes low-frequency components of the large focal-spot image with high-frequency components of the small focal-spot image.Type: ApplicationFiled: February 22, 2017Publication date: August 23, 2018Applicant: Toshiba Medical Systems CorporationInventors: Amit JAIN, Joseph Manak, Haruki Iwai
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Patent number: 10019795Abstract: A radiography apparatus includes a radiation source, a radiation detector, and processing circuitry. The processing circuitry is configured to obtain an X-ray image of an object, obtain a focal spot size of a radiation source used to generate the obtained X-ray image, and estimate a magnification of the obtained X-ray image. The processing circuitry is also configured to obtain, using a look-up table and the obtained focal spot size, a deconvolution kernel. The processing circuitry is also configured to generate a corrected X-ray image by performing a deconvolution operation on the obtained X-ray image using the obtained deconvolution kernel and the estimated magnification.Type: GrantFiled: August 15, 2016Date of Patent: July 10, 2018Assignees: The Research Foundation for the State University of New York, Toshiba Medical Systems CorporationInventors: Stephen Rudin, Daniel R. Bednarek, Amit Jain, Joseph Manak
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Publication number: 20180144475Abstract: A medical image processing apparatus according to an embodiment includes processing circuitry. The processing circuitry acquires image data including image data of a blood vessel of a subject. The processing circuitry performs analysis related to the blood vessel by using the image data, and specifies a region of interest in the blood vessel based on a result of the analysis. The processing circuitry performs fluid analysis on a region other than the region of interest at a first accuracy, and performs fluid analysis on the region of interest at a second accuracy that is higher than the first accuracy.Type: ApplicationFiled: November 23, 2016Publication date: May 24, 2018Applicant: TOSHIBA MEDICAL SYSTEMS CORPORATIONInventors: Yiemeng HOI, Joseph MANAK, Kazumasa ARAKITA, Jingwu YAO, James BEGELMAN, Victor GORIN
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Publication number: 20180047156Abstract: A radiography apparatus includes a radiation source, a radiation detector, and processing circuitry. The processing circuitry is configured to obtain an X-ray image of an object, obtain a focal spot size of a radiation source used to generate the obtained X-ray image, and estimate a magnification of the obtained X-ray image. The processing circuitry is also configured to obtain, using a look-up table and the obtained focal spot size, a deconvolution kernel. The processing circuitry is also configured to generate a corrected X-ray image by performing a deconvolution operation on the obtained X-ray image using the obtained deconvolution kernel and the estimated magnification.Type: ApplicationFiled: August 15, 2016Publication date: February 15, 2018Applicants: The Research Foundation for the State University of New York, Toshiba Medical Systems CorporationInventors: Stephen RUDIN, Daniel R. BEDNAREK, Amit JAIN, Joseph MANAK
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Patent number: 9888901Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube, a detector, an acquisition circuitry, and imaging control circuitry. The acquisition circuitry creates photon count data indicating the number of photons of the X-rays incident on the detector, for each of a plurality of energy bins for identifying a plurality of target substances, based on the detection signal output by the detector. The imaging control circuitry determines an imaging plan including at least one of a setting condition that is a condition concerning setting of a plurality of energy bins used when the acquisition circuitry creates photon count data in main imaging, and an X-ray radiation condition that is a condition concerning X-rays emitted by the X-ray tube in main imaging, based on the photon count data created by the acquisition circuitry or image data of the subject.Type: GrantFiled: February 19, 2016Date of Patent: February 13, 2018Assignee: Toshiba Medical Systems CorporationInventors: Haruki Iwai, Amit Jain, Takuya Sakaguchi, Seiichirou Nagai, Joseph Manak
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Publication number: 20170296132Abstract: An apparatus for generating corrected X-ray projection data from target X-ray projection data obtained by performing an X-ray scan with a detector having an anti-scatter grid, and a method for creating a lookup table and generating corrected X-ray projection data. The apparatus includes a detector configured to detect incident X-rays, an anti-scatter grid configured to suppress scattered radiation incident on the detector, and an X-ray source configured to irradiate the target with X-rays. Processing circuitry is configured to cause the X-ray source to scan, using a peak kilovoltage (kVp), the target to produce the target projection data, determine a patient-to-detector distance (PDD) and an area irradiated (FS), transform the target projection data into a spatial frequency domain, determine scatter values by accessing the lookup table using the kVp, PDD, and FS values, and subtract the scatter values from the frequency components to obtain the corrected X-ray projection data.Type: ApplicationFiled: April 15, 2016Publication date: October 19, 2017Applicant: Toshiba Medical Systems CorporationInventors: Joseph MANAK, Amit JAIN, Hisato TAKEMOTO
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Publication number: 20170238896Abstract: An X-ray diagnostic apparatus according to an embodiment includes an X-ray tube, a detector, an acquisition circuitry, and imaging control circuitry. The X-ray tube emits X-rays to a subject. The detector outputs a detection signal in response to incidence of the X-rays transmitted through the subject. The acquisition circuitry creates photon count data indicating the number of photons of the X-rays incident on the detector, for each of a plurality of energy bins for identifying a plurality of target substances, based on the detection signal output by the detector.Type: ApplicationFiled: February 19, 2016Publication date: August 24, 2017Applicant: Toshiba Medical Systems CorporationInventors: Haruki IWAI, Amit Jain, Takuya Sakaguchi, Seiichirou Nagai, Joseph Manak
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Patent number: 7782998Abstract: A plurality of projection images are acquired over an angular range during the slow rotation of a C-arm gantry having a source and detector. Phase-specific reconstructions are generated from the plurality of projections, wherein each phase-specific reconstruction is generated generally from projections acquired at or near the respective phase. In one embodiment, a plurality of motion estimates are generated based upon the phase-specific reconstructions. One or more motion-corrected reconstructions may be generated using the respective motion estimates and projections. The motion-corrected reconstructions may be associated to form motion-corrected volume renderings.Type: GrantFiled: December 21, 2004Date of Patent: August 24, 2010Assignee: General Electric CompanyInventors: David Langan, Peter Edic, Abdalmajeid Alyassin, Bernhard Claus, Joseph Manak, James V. Miller
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Publication number: 20070133747Abstract: A technique is provided for efficient dose management and/or scatter reduction during imaging. The technique includes estimating attenuation level of different portions of an imaged object, and independently adjusting at least one of X-ray flux and X-ray energy spectrum from each of a plurality of emission points of a distributed X-ray source based on the attenuation level of different portions of the imaged object. The technique also includes acquiring two or more projection images of different portions of an entire field of view via the distributed X-ray source, removing respective scatter components from each of the two or more projection images, and combining the projection images less scatter components to generate a final projection image of the entire field of view.Type: ApplicationFiled: December 8, 2005Publication date: June 14, 2007Inventors: Joseph Manak, Douglas Albagli, Richard Thompson, Michael Harsh
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Publication number: 20070122020Abstract: A technique is provided for geometrical analysis and calibration of a volumetric imaging system. The technique includes computing a projection error between estimated locations of a set of markers of a phantom based on a estimated imaging geometry and observed locations of the respective markers for at least one projection image, decomposing the computed projection error into one or more error components corresponding to respective geometric parameters of the imaging geometry, and updating at least one parameter of the estimated imaging geometry based on the one or more error components.Type: ApplicationFiled: November 29, 2005Publication date: May 31, 2007Inventors: Bernhard Claus, Joseph Manak
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Publication number: 20070009088Abstract: An X-ray imaging system is provided. The X-ray imaging system includes a distributed X-ray source and a detector. The distributed X-ray source is configured to emit X-rays from a plurality of emission points arranged as a substantially linear segment, a substantially arcuate segment, a curvilinear segment, or a substantially non-planar surface and the detector is configured to generate a plurality of signals in response to X-rays incident upon the detector.Type: ApplicationFiled: July 6, 2005Publication date: January 11, 2007Inventors: Peter Edic, Bernhard Claus, Jeffrey Eberhard, James Miller, David Langan, Mark Vermilyea, Joseph Manak, Christopher Unger
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Publication number: 20060222147Abstract: A system for generating a tunable X-ray pulse comprises a first electron beam source configured to direct a first electron pulse of predetermined energy and pulse length towards a first interaction zone, a laser beam source configured to direct a first photon pulse of predetermined energy and pulse length towards the first interaction zone to interact with the first electron pulse. The first interaction produces a substantially monochromatic second photon pulse of higher photon energy directed towards a second interaction zone, and a second electron beam source configured to direct a second electron pulse of predetermined energy and pulse length towards the second interaction zone so that the second interaction produces an X-ray pulse of predetermined energy and pulse length in a cascaded inverse Compton scattering (ICS) configuration.Type: ApplicationFiled: March 31, 2005Publication date: October 5, 2006Inventors: Robert Filkins, John Price, Brian Lawrence, Matthew Nielsen, Joseph Manak, Bruce Dunham
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Publication number: 20060133564Abstract: A plurality of projection images are acquired over an angular range during the slow rotation of a C-arm gantry having a source and detector. Phase-specific reconstructions are generated from the plurality of projections, wherein each phase-specific reconstruction is generated generally from projections acquired at or near the respective phase. In one embodiment, a plurality of motion estimates are generated based upon the phase-specific reconstructions. One or more motion-corrected reconstructions may be generated using the respective motion estimates and projections. The motion-corrected reconstructions may be associated to form motion-corrected volume renderings.Type: ApplicationFiled: December 21, 2004Publication date: June 22, 2006Inventors: David Langan, Peter Edic, Abdalmajeid Alyassin, Bernhard Claus, Joseph Manak, James Miller