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公开(公告)号：US20240362834A1
公开(公告)日：2024-10-31
申请号：US18643448
申请日：2024-04-23
发明人： Yusuke Tetsumura , Ryota Kohara
CPC分类号： G06T11/005 , A61B6/032 , G06T5/50 , G06T7/0014 , G06T7/20 , G06T11/008 , G06T2207/10081 , G06T2207/10116 , G06T2207/20104 , G06T2207/30048 , G06T2207/30168 , G06T2207/30196 , G06T2210/41
摘要： A center phase (image reconstruction phase) of reconstruction can be appropriately set even in a case in which motion correction is applied to reconstruct an image, to ensure a good image quality, and to support optimum phase search work by a doctor, an examination technician, or the like (hereinafter, referred to as an operator). An arithmetic operation unit that performs image reconstruction in an X-ray CT apparatus includes a motion correction reconstruction unit that detects motion information of a subject and performs motion correction reconstruction, and an image quality score calculation unit that calculates an image quality score for evaluating an image quality in one or a plurality of motion phases with respect to an image reconstructed by the motion correction reconstruction unit. An interface that can perform a phase search while comparing motion correction using the displayed image quality score is provided.
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公开(公告)号：US20240358339A1
公开(公告)日：2024-10-31
申请号：US18765321
申请日：2024-07-07
发明人： Yangyi LIU
CPC分类号： A61B6/5282 , A61B6/032 , A61B6/5229 , A61B6/4241
摘要： The present disclosure is related to methods and systems for imaging. The method may include obtaining current information of a target subject. The current information may include information relating to current radiation attenuation of the target object. The method may also include obtaining reference information of the target subject. The reference information may include information relating to historical radiation attenuation of the target object. The method may also include determining at least one current parameter of the target subject based on the current information and the reference information. The method may also include obtaining a target image of the target subject based on the at least one current parameter.
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公开(公告)号：US12131409B2
公开(公告)日：2024-10-29
申请号：US17553221
申请日：2021-12-16
发明人： Edward Steven Jimenez, Jr. , Srivathsan Prabu Koundinyan , Isabel Gallegos , Adriana Stohn , Gabriella Dalton
IPC分类号： A61B6/03 , A61B6/40 , A61B6/58 , G01N23/046 , G06T11/00
CPC分类号： G06T11/005 , A61B6/032 , A61B6/4085 , A61B6/586 , G01N23/046 , G06T11/006 , G06T2207/10081 , G06T2211/424
摘要： A calibration method for an x-ray computerized tomography system and a method of tomographic reconstruction are provided. The calibration method includes steps of measuring at least one point spread function (PSF) at each of a plurality of points, compressing each PSF, and in one or more storing operations, storing the compressed PSFs in a computer-accessible storage medium. The PSF measurements are made in a grid of calibration points in a field of view (FOV) of the system. In the measuring step, an absorber is positioned at each of the calibration points, and an x-ray projection is taken at least once at each of those absorber positions. In the method of tomographic image reconstruction, projection data from an x-ray tomographic projection system are input to an iterative image reconstruction algorithm. The algorithm retrieves and utilizes a priori system information (APSI) The APSI comprises comprising point spread functions (PSFs) of all voxels in a voxelization of the field of view that are compressed in the form of vectors of parameters. For utilization, each retrieved vector of parameters is decompressed so as to generate a discretized PSF.
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公开(公告)号：US12127816B2
公开(公告)日：2024-10-29
申请号：US17830799
申请日：2022-06-02
发明人： Takuma Igarashi
IPC分类号： A61B5/02 , A61B5/00 , A61B5/021 , A61B5/026 , A61B6/00 , A61B6/03 , A61B6/50 , G06T7/62 , A61B34/10
CPC分类号： A61B5/02007 , A61B5/021 , A61B5/026 , A61B5/7278 , A61B6/032 , A61B6/486 , A61B6/503 , A61B6/504 , A61B6/507 , A61B6/5217 , G06T7/62 , A61B2034/105 , G06T2207/10081 , G06T2207/30048 , G06T2207/30104 , G06T2207/30172
摘要： According to one embodiment, a medical image processing apparatus includes first specifier, second specifier, determiner and display controller. First specifier collates an ischemic region calculated from a blood vessel visualized into a three-dimensional image in a plurality of phases with a dominating region of the blood vessel, and specifies a culprit vessel in the ischemic region. Second specifier specifies a culprit stenosis in the culprit vessel based on a pressure index calculated from the blood vessel. Determiner determines a connection position to connect a bypass vessel that makes a detour around the culprit stenosis. Display controller displays the determined connection position on a display.
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公开(公告)号：US12125662B2
公开(公告)日：2024-10-22
申请号：US17657692
申请日：2022-04-01
IPC分类号： H01J35/14 , A61B6/03 , A61B6/40 , G01N23/046
CPC分类号： H01J35/153 , A61B6/032 , A61B6/4028 , G01N23/046 , H01J35/147 , H01J2235/086
摘要： Systems/techniques that facilitate correction of intra-scan focal-spot displacement are provided. In various embodiments, a system can access a first gantry angle of a medical scanner. In various aspects, the system can determine a first displacement of a focal-spot of the medical scanner based on the first gantry angle, by referencing a mapping that correlates gantry angles to focal-spot displacements. In various instances, the system can compensate, via one or more focal-spot position adjusters of the medical scanner, for the first displacement.
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公开(公告)号：US12125604B2
公开(公告)日：2024-10-22
申请号：US17591143
申请日：2022-02-02
摘要： A pre-patient collimator for a CT imaging system is provided. The pre-patient collimator includes a collimator housing including a plurality of walls, wherein the plurality of walls includes a first wall configured to face an X-ray source when the pre-patient collimator is coupled to the CT imaging system and a second wall and a third wall flanking the first wall. The pre-patient collimator also includes a bowtie filter assembly disposed within the collimator housing and including a bowtie filter. The pre-patient collimator further includes an adjustment mechanism configured to move the bowtie filter assembly in a lateral direction between the second wall and the third wall within the collimator housing.
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公开(公告)号：US12121380B2
公开(公告)日：2024-10-22
申请号：US17964642
申请日：2022-10-12
发明人： Shinichi Kojima , Fumito Watanabe , Isao Takahashi , Kazuma Yokoi , Taiga Goto , Fuyuhiko Teramoto , Ryosuke Tsuchida
CPC分类号： A61B6/4241 , A61B6/032 , A61B6/5205 , A61B6/5258
摘要： There is provided a PCCT apparatus capable of correcting a band artifact of one material decomposition image and a band artifact of another material decomposition image. The PCCT apparatus obtains projection data divided into plural energy bins by irradiating a subject with X-rays, and includes: a first correction unit that corrects a band artifact of a first material decomposition image among plural material decomposition images created on the basis of the projection data, and calculates a first correction amount that is a correction amount for the band artifact; an energy calculation unit that calculates an average energy of X-rays that transmit the subject; and a second correction unit that corrects the band artifact of a second material decomposition image using a second correction amount that is a correction amount calculated on the basis of the first correction amount and the average energy.
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公开(公告)号：US20240342033A1
公开(公告)日：2024-10-17
申请号：US18633173
申请日：2024-04-11
申请人： CardioNavix, LLC
CPC分类号： A61G12/001 , B62B3/003 , B62B3/004 , B62B3/04 , B62B5/0013 , B62B5/004 , B62B5/04 , B62B5/049 , A61B6/037 , A61G2203/30 , A61G2210/50 , B62B5/0033 , B62B5/0414 , B62B5/0433 , B62B2202/56 , B62B2202/67 , B62B2204/00 , B62B2204/02 , B62B2204/04 , B62D51/04
摘要： The disclosure relates to a medical imaging supply transport cart having enhanced safety features and a process implementing the same. The medical imaging supply transport cart includes a support surface configured to support medical imaging supplies, the support surface further configured to support a support mechanism, and the support mechanism further configured to support the medical imaging supplies. The support mechanism further configured to rigidly hold the medical imaging supplies with a first holding mechanism, the medical imaging supplies configured to store at least one dose of a nuclear medicine, a plurality of wheels arranged below the support surface, at least one door configured to enclose the medical imaging supplies, and a handle configured to be grasped by a user to guide the medical imaging supply transport cart.
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公开(公告)号：US20240341706A1
公开(公告)日：2024-10-17
申请号：US18135482
申请日：2023-04-17
发明人： Heber Hernandez , Jordan Brown
CPC分类号： A61B6/466 , A61B6/032 , A61B6/5223
摘要： A C-arm x-ray imaging device includes a radiation source, a detector, a control mechanism and a computing device to control an imaging procedure performed by the imaging system. The computing device includes a processor and an interconnected database containing machine-readable instructions for the operation of the processor and for processing the image data from the detector to create one or more 2D images of a subject and to reconstruct a 3D volume from the one or more 2D images. The processor is configured to determine the distribution of radiation attenuation values across at least one portion of the 3D volume, to determine a window preset for different material types represented in the distribution of radiation attenuation values, where the window presets are presented along with the 2D/3D images on the device display to allow quick switching between images optimizing viewing of different types of materials within the images.
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公开(公告)号：US20240341700A1
公开(公告)日：2024-10-17
申请号：US18608262
申请日：2024-03-18
申请人： Mobius Imaging, LLC
CPC分类号： A61B6/035 , A61B6/4405 , A61B6/46 , A61B6/56
摘要： An imaging system includes a first portion and a second portion that translates and/or rotates with respect to the first portion. A first locking mechanism may prevent the second portion from translating with respect to the first portion, such as during transport of the system. A second locking mechanism may prevent the second portion from rotating with respect to the first portion, such as during transport and/or during an imaging scan. Further embodiments include a cable management system between the first and second portions, a spherically-shaped surface of a support gimbal and a user interface device for an imaging system.
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