公开(公告)号：US20240306999A1

公开(公告)日：2024-09-19

申请号：US18602387

申请日：2024-03-12

Applicant: Siemens Healthineers AG

Inventor： Julian Wohlers ,  Daniel Nicolas Splitthoff ,  Tobias Kober ,  Hans Weber

IPC: A61B5/00 ,  A61B5/055 ,  G01R33/58 ,  G01S7/40

CPC classification number: A61B5/721 ,  A61B5/0042 ,  A61B5/055 ,  A61B5/7267 ,  G01R33/58 ,  G01S7/40 ,  A61B2560/0223

Abstract: A movement detection method is calibrated for a magnetic resonance apparatus. An examination object is positioned on a movement apparatus. During a training phase, training data is recorded according to the movement detection method, wherein the examination object is simultaneously moved by the movement apparatus. The movement detection method is calibrated on the basis of the training data.

公开(公告)号：US20240288526A1

公开(公告)日：2024-08-29

申请号：US18586415

申请日：2024-02-23

Applicant: The University of Hong Kong

Inventor： Ed Xuekui Wu ,  Jiahao Hu ,  Zheyuan Yi ,  Tze Lun Leong

IPC: G01R33/56 ,  G01R33/48 ,  G01R33/561 ,  G01R33/58 ,  G06T11/00

CPC classification number: G01R33/5608 ,  G01R33/4824 ,  G01R33/5611 ,  G01R33/58 ,  G06T11/005 ,  G06T2210/41

Abstract: A method for hybrid-domain reconstruction of MRI images includes the steps of (A) extracting null-subspace bases of a calibration matrix from k-space coil calibration data to calculate image-domain spatial null maps (SNMs) and (B) reconstructing multi-channel images by solving an image-domain nulling system formed by SNMs that contain both coil sensitivity and finite image support information, thus circumventing the masking-related procedure and demonstrating a robust reconstruction.

公开(公告)号：US20240219504A1

公开(公告)日：2024-07-04

申请号：US18147418

申请日：2022-12-28

Applicant: Neuro42 Inc.

Inventor： Hung-Yu LIN ,  Donghui YIN ,  Nguyen PHAM ,  Sree Poojitha YERRAMSETTI ,  Randy LINK ,  Nio ANDERSON ,  Rishabh OSTAWAL ,  Joyce YE ,  Guanhao FU ,  Ghoncheh AMOUZANDEH ,  Xiaowei ZOU

IPC: G01R33/58 ,  G01R33/56

CPC classification number: G01R33/58 ,  G01R33/5608 ,  A61B5/055

Abstract: The present disclosure provides magnetic resonance phantom imaging phantoms and method of assembling thereof. In one aspect, a magnetic resonance imaging phantom can include a plurality of modular components. The plurality of modular components can include a first modular component, a second modular component, a shell, and a lid. The second modular component can be different than the first modular component. The shell can be structured to receive at least one modular component. The lid can be attachable to the shell to enclose the at least one modular component received within the shell.

公开(公告)号：US11998381B2

公开(公告)日：2024-06-04

申请号：US17678567

申请日：2022-02-23

Applicant: Imam Abdulrahman Bin Faisal University

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

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

CPC classification number: A61B6/583 ,  A61B6/502 ,  A61L31/005 ,  A61L31/028 ,  A61L31/042 ,  A61L31/14 ,  G01R33/58

Abstract: 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：US20240019516A1

公开(公告)日：2024-01-18

申请号：US18032127

申请日：2021-10-18

Applicant: Preoperative Performance Inc.

Inventor： Fergal Kerins ,  Murugathas Yuwaraj

IPC: G01R33/58 ,  G01R33/563

CPC classification number: G01R33/58 ,  G01R33/56341 ,  G01R33/56366

Abstract: Components and construction methods are described for constructing a wide variety of configurable phantoms for use in MR imaging. These phantoms generally comprise an outer housing; at least one support plate disposed within the outer housing and having a plurality of locations for selectively receiving at least one element allowing for configurable phantoms to be created; the at least one element having anisotropic diffusion, isotropic diffusion, and/or perfusion characteristics, the at least one element being releasably connected at one of the plurality of locations on the support plate; and a matrix material contained within the outer housing, the matrix material being an aqueous fluid, wherein during MR imaging, the presence of the aqueous fluid, and directionality of fluid molecular diffusion within or through the at least one element are recorded in MR images.

公开(公告)号：US20230417853A1

公开(公告)日：2023-12-28

申请号：US17925034

申请日：2022-03-09

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Ulrich Wolfgang Katscher ,  Peter Koken

IPC: G01R33/567 ,  G01R33/28 ,  G01R33/58 ,  A61B5/00

CPC classification number: G01R33/5673 ,  G01R33/283 ,  G01R33/288 ,  G01R33/58 ,  A61B5/704

Abstract: The present invention relates to multi-station scan. In order to improve selection of stations, a device is provided for detecting critical stations in a multi-station scan. The device comprises an input unit, a processing unit, and an output unit. The input unit is configured to receive image data taken from a patient lying on a table before start of a diagnostic scan with a magnetic resonance imaging system. The processing unit is configured to analyze the image data of the patient to identify a spatial location of the lungs of the patient to align the spatial location of the lungs of the patient with a planned multi-station scan to identify the critical stations that are potentially affected by a respiratory motion of the patient, and to assign breath-hold to the identified critical stations. The output unit is configured to provide the identified critical stations. Thus, the selection of critical stations can be automatically and consistently satisfied without operator intervention. The tedious and time-consuming step of manually identifying and selecting stations potentially affected by respiratory motion can be avoided.

公开(公告)号：US20230366967A1

公开(公告)日：2023-11-16

申请号：US18196229

申请日：2023-05-11

Applicant: The Regents of the University of Michigan

Inventor： Scott D. Swanson

IPC: G01R33/58

CPC classification number: G01R33/58

Abstract: Provided herein is technology relating to medical imaging and particularly, but not exclusively, to devices, methods, systems, and kits for validating medical imaging using an imaging phantom.

公开(公告)号：US11709217B2

公开(公告)日：2023-07-25

申请号：US17490111

申请日：2021-09-30

Applicant: Siemens Healthcare GmbH

Inventor： Mario Zeller ,  Gerald Mattauch

IPC: G01R33/58 ,  G01R33/54 ,  G01R33/56

CPC classification number: G01R33/58 ,  G01R33/543 ,  G01R33/5608

Abstract: Calibration data is determined for a reconstruction of image data from scan data acquired via a magnetic resonance system. This includes specifying acquisition shots for an acquisition of desired scan data in which acquisition shots scan data is acquired after radiating-in an RF excitation pulse, identifying first acquisition shots among the acquisition shots specified in which scan data is acquired in a central region in k-space, stipulating a sequence in which the specified acquisition shots are to be carried out such that first acquisition shots are arranged in the sequence in a starting portion to be carried out first, acquiring the scan data by carrying out the specified acquisition shots in the stipulated sequence, determining calibration data from scan data acquired in the starting portion of the sequence, and reconstructing image data using the acquired scan data and the specified calibration data.

公开(公告)号：US20230204702A1

公开(公告)日：2023-06-29

申请号：US18110974

申请日：2023-02-17

Applicant: MODUS MEDICAL DEVICES INC.

Inventor： David John Miller ,  Kalin Ignatov Penev ,  Jennifer Michele Dietrich ,  Nicholas Gerard Hartman ,  Rocco Flores ,  Grant Richard Koenig

IPC: G01R33/58 ,  G01T1/10

CPC classification number: G01R33/58 ,  G01T1/10

Abstract: A deformable phantom, according to the present invention, has a housing made of a Mill invisible material enclosing a sealed reservoir filled with a MM signal producing material, a piston slidably mounted within a sleeve and extending into the sealed reservoir, wherein the sleeve is slidably mounted to the housing and extends into the sealed reservoir, a deformable structure within the sealed reservoir, and one or more point dosimeters located on or within the deformable structure. The piston and sleeve move opposite to one another to conserve a constant fluid volume within the sealed reservoir as the piston moves in and out of the sealed reservoir to cause motion and/or deformation of the deformable structure.

公开(公告)号：US11662412B2

公开(公告)日：2023-05-30

申请号：US17541070

申请日：2021-12-02

Applicant: Hyperfine Operations, Inc.

Inventor： Todd Rearick ,  Gregory L. Charvat ,  Matthew Scot Rosen ,  Jonathan M. Rothberg

IPC: G01R33/56 ,  G01R33/36 ,  G01R33/38 ,  G01R33/385 ,  G01R33/28 ,  G01R33/565 ,  G01R33/44 ,  G01R33/58 ,  G01R33/48 ,  G01R33/54 ,  G01R33/34 ,  H01F7/02 ,  H01F7/06 ,  G01R33/381 ,  G01R33/383 ,  G01R33/3875 ,  G01R33/422

CPC classification number: G01R33/5608 ,  G01R33/28 ,  G01R33/34007 ,  G01R33/36 ,  G01R33/3614 ,  G01R33/38 ,  G01R33/381 ,  G01R33/3802 ,  G01R33/383 ,  G01R33/3804 ,  G01R33/385 ,  G01R33/3806 ,  G01R33/3852 ,  G01R33/3854 ,  G01R33/3856 ,  G01R33/3858 ,  G01R33/3875 ,  G01R33/445 ,  G01R33/48 ,  G01R33/543 ,  G01R33/546 ,  G01R33/56 ,  G01R33/56518 ,  G01R33/58 ,  H01F7/02 ,  H01F7/06 ,  G01R33/422

Abstract: According to some aspects, a method of suppressing noise in an environment of a magnetic resonance imaging system is provided. The method comprising estimating a transfer function based on multiple calibration measurements obtained from the environment by at least one primary coil and at least one auxiliary sensor, respectively, estimating noise present in a magnetic resonance signal received by the at least one primary coil based at least in part on the transfer function, and suppressing noise in the magnetic resonance signal using the noise estimate.