公开(公告)号：US20240341710A1

公开(公告)日：2024-10-17

申请号：US18642974

申请日：2024-04-23

申请人： Hologic, Inc.

发明人： Timothy R. Stango ,  Jay A. Stein ,  Biao Chen ,  Christopher Ruth

IPC分类号： A61B6/50 ,  A61B6/00 ,  A61B6/04 ,  A61B6/58

CPC分类号： A61B6/502 ,  A61B6/0414 ,  A61B6/5258 ,  A61B6/4447 ,  A61B6/582

摘要： A curved compression element, such as a breast compression paddle, and imaging systems and methods for use with curved compression elements. A system may include a radiation source, a detector, and a curved compression element. Operations are performed that include receiving image data from the detector; accessing a correction map for the at least one compression paddle; correcting the image data based on the correction map to generate a corrected image data; and generating an image of the breast based on the corrected image data. The breast compression element generally has no sharp edges, but rather has smooth edges and transitions between surfaces. The breast compression paddle also includes a flexible material that spans a portion of a curved bottom surface of the breast compression paddle to define a gap. The flexible material may be a thin-film material such as a shrink wrap.

公开(公告)号：US20240335173A1

公开(公告)日：2024-10-10

申请号：US18579951

申请日：2021-08-27

申请人： Siemens Shanghai Medical Equipment Ltd.

发明人： Tao Tao Li ,  Xuan Gu ,  Yi Tian ,  Yu Ting Lou

IPC分类号： A61B6/03 ,  A61B6/58

CPC分类号： A61B6/032 ,  A61B6/583

摘要： A method for determining a longitudinal position of a combined phantom, a computer readable storage medium, and a CT device. The method includes: scanning the combined phantom to obtain a topogram thereof. The combined phantom is fixed to a table top, protrudes beyond the table top, is axially parallel to the longitudinal direction, and includes a plurality of phantoms, one of which is a slice phantom. The method further includes identifying the plurality of phantoms on the topogram, and using an axial center of the slice phantom as the longitudinal position of the combined phantom. The longitudinal position is determined by using the topogram of the combined phantom, and a phantom position is aligned automatically.

公开(公告)号：US20240312062A1

公开(公告)日：2024-09-19

申请号：US18674977

申请日：2024-05-27

申请人： SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

发明人： Songsong TANG ,  Yong ZHAO ,  Xin FAN

IPC分类号： G06T7/80 ,  A61B6/03 ,  A61B6/58

CPC分类号： G06T7/80 ,  A61B6/037 ,  A61B6/583 ,  G06T2207/10104

摘要： Systems and methods for determining at least one correction parameter for a Positron Emission Tomography (PET) scanner including a plurality of detector units is provided. For each line of response (LOR) of a plurality of lines of response (LORs) associated with the plurality of detector units, the methods may include determining, based on scan data of one or more scans of a phantom at a plurality of positions, a first sum of coincidence events on the LOR, wherein the phantom is moved to the plurality of positions along an axis of a field of view of the PET scanner during the one or more scans, and a length of the phantom is less than a length of the field of view of the PET scanner along the axis; determining, based on the first sum of coincidence events, at least one correction parameter associated with the LOR.

公开(公告)号：US12082953B2

公开(公告)日：2024-09-10

申请号：US17446835

申请日：2021-09-03

申请人： SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

发明人： Xiaofen Zhao

IPC分类号： A61B6/04 ,  A61B6/00 ,  A61B6/46 ,  A61B6/58 ,  G06F3/0482 ,  G06F3/04847 ,  G06T7/00 ,  G06T7/50 ,  G06T7/70 ,  A61B5/055

CPC分类号： A61B6/0487 ,  A61B6/0407 ,  A61B6/465 ,  A61B6/467 ,  A61B6/488 ,  A61B6/54 ,  A61B6/582 ,  G06F3/0482 ,  G06F3/04847 ,  G06T7/0012 ,  G06T7/50 ,  G06T7/70 ,  A61B5/055 ,  G06T2200/24 ,  G06T2207/30004 ,  G06T2207/30196

摘要： Systems and methods for positioning in medical systems are provided. The system may obtain data associated with a scanning range of a subject. The system may also obtain an image of the subject on a couch of a medical radiation device. The image may be acquired by an imaging device when the couch is at a first position. The system may determine a position of the scanning range of the subject in the image. The system may further cause, based on the position of the scanning range in the image, the couch to move to a second position. The scanning range of the subject may be in a radiation region of the medical radiation device when the couch is located at the second position.

公开(公告)号：US20240268772A1

公开(公告)日：2024-08-15

申请号：US18568389

申请日：2021-06-08

申请人： Sino Canada Health Engineering Research Institute ( Hefei) Ltd.

发明人： Jin Su ,  Gong Zhang ,  Huabin Wang

IPC分类号： A61B6/03 ,  A61B6/42 ,  A61B6/58

CPC分类号： A61B6/037 ,  A61B6/4208 ,  A61B6/583

摘要： Provided is a normalization correction method for a PET system a detector including crystals. The method includes: obtaining a coincidence event dataset including a plurality of lines of response; calculating a geometric symmetry value of each line of response; grouping the plurality of lines of response according to the geometric symmetry value, where a plurality of lines of response in a group have a same geometric symmetry value; calculating a number of coincidence events of a same group through accumulation; cyclically calculating, according to the calculated number of the coincidence events for the same group, a geometric factor value of each group, where each line of response in the same group of lines of response has a same geometric factor value; cyclically calculating crystal efficiency factor values of the crystals; and calculating normalization factor values of the lines of response respectively, according to the geometric factor value and the crystal efficiency factor values.

公开(公告)号：US12048578B2

公开(公告)日：2024-07-30

申请号：US17580723

申请日：2022-01-21

申请人： Brainlab AG ,  medPhoton GmbH

发明人： Michael Bertram ,  Robert Essenreiter ,  Philipp Steininger ,  Heinz Deutschmann

IPC分类号： A61B6/00 ,  A61B6/46 ,  A61B6/58 ,  A61B6/12 ,  A61B34/10 ,  A61B34/20

CPC分类号： A61B6/547 ,  A61B6/46 ,  A61B6/584 ,  A61B6/12 ,  A61B6/4405 ,  A61B2034/107 ,  A61B2034/2055

摘要： Disclosed is a computer-implemented method for determining a target position of an X-ray device which encompasses acquiring image data describing an anatomical structure of a patient, for example, by means of a 3D scan, and registering the image data relative to a coordinate system of the patient, for example by means of a navigation system (embodied by registered image data). Furthermore, a trajectory of an implant positioned within the anatomical structure relative to the patient coordinate system is acquired (embodied by trajectory data). A target position of an X-ray device for acquiring an X-ray image of at least part of the implant is determined based on the registered image and the acquired trajectory of the implant (embodied by X-ray device position data).

公开(公告)号：US12016720B2

公开(公告)日：2024-06-25

申请号：US18118651

申请日：2023-03-07

申请人： The Regents of the University of California ,  Johns Hopkins University

发明人： John M. Boone ,  Jeffrey H. Siewerdsen ,  George W. Burkett, Jr.

IPC分类号： A61B6/00 ,  A61B6/40 ,  A61B6/58

CPC分类号： A61B6/583 ,  A61B6/4085 ,  A61B6/5258 ,  A61B6/542

摘要： Embodiments provide a modular phantom that enables quantitative assessment of imaging performance (e.g., spatial resolution, image uniformity, image noise, contrast to noise ratio, cone-beam artifact) and dosimetry in cone-beam computed tomography (CT). The modular phantom includes one or more modules for various imaging performance tests that may be rearranged in the phantom to accommodate the design of various cone-beam CT imaging systems. The modular phantom includes one or more of a cone-beam module, an angled edge module, or a line spread module. The phantom may be inserted into a larger sleeve and be used to assess imaging performance and dosimetry in whole body CT imaging systems.

公开(公告)号：US11998382B2

公开(公告)日：2024-06-04

申请号：US17678726

申请日：2022-02-23

申请人： Shimadzu Corporation ,  NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY

发明人： Taketo Kishi ,  Makoto Sato ,  Toshiyuki Takatsuji ,  Makoto Abe ,  Hiroyuki Fujimoto

IPC分类号： A61B6/58 ,  A61B6/03 ,  A61B90/00

CPC分类号： A61B6/583 ,  A61B6/032 ,  A61B90/06 ,  A61B2090/061

摘要： 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.

公开(公告)号：US11998381B2

公开(公告)日：2024-06-04

申请号：US17678567

申请日：2022-02-23

申请人： Imam Abdulrahman Bin Faisal University

发明人： Gameel Saleh ,  Budour Alfares ,  Aljohara Aljabr ,  Maryam Zainalabedin ,  Munthreen Almozain

IPC分类号： A61B6/58 ,  A61B6/50 ,  A61L31/00 ,  A61L31/02 ,  A61L31/04 ,  A61L31/14 ,  G01R33/58

CPC分类号： A61B6/583 ,  A61B6/502 ,  A61L31/005 ,  A61L31/028 ,  A61L31/042 ,  A61L31/14 ,  G01R33/58

摘要： A heterogeneous patient-based breast phantom that mimics the anatomy and properties of real breast tissues when screened with ionizing and nonionizing imaging modalities is described. The heterogeneous breast phantom includes a skin mimicking segment; an adipose tissue mimicking segment; a fibro-glandular tissue mimicking segment; and a pectoral muscle mimicking segment wherein each segment is shaped and arranged such that the breast phantom represents a breast tissue. Performance of the breast phantom was characterized by mass attenuation coefficient, electron density and effective atomic number. Further, performance of breast phantoms was confirmed CT and breast MM machines.

公开(公告)号：US20240173081A1

公开(公告)日：2024-05-30

申请号：US18283275

申请日：2022-03-22

申请人： OSTESYS

发明人： Marie-Anne CHANRION ,  Vivien DELMON ,  Sylvain FONTAINE

IPC分类号： A61B34/20 ,  A61B6/58 ,  A61B34/10 ,  G06T7/246 ,  G06T7/33 ,  G06T7/73 ,  G16H20/40

CPC分类号： A61B34/20 ,  A61B6/583 ,  A61B34/10 ,  G06T7/248 ,  G06T7/337 ,  G06T7/74 ,  G16H20/40 ,  G06T2207/10116 ,  G06T2207/30008

摘要： The invention concerns a method for locating at least one characteristic point in a region of a joint having a joint center (AC. HC. KC), the joint center (AC. HC. KC) being an end of a bone (T. F), a bone tracker (T_F. T_T) has been fixed to said bone and defines a reference system (Ref_T. Ref_F).