公开(公告)号：US12153107B2

公开(公告)日：2024-11-26

申请号：US17763715

申请日：2020-07-16

Applicant: Siemens Healthcare Limited

Inventor： Simon James Calvert

IPC: H01F6/06 ,  G01R33/38 ,  G01R33/3815 ,  G01R33/385 ,  G01R33/421

Abstract: A superconducting magnet assembly may include a main magnet assembly having at least one annular coil arranged about an axis, and at least one shield coil, of greater diameter than the main magnet assembly, arranged about the axis. At least one support may be provided, attached to the shield coil and to the main magnet assembly.

公开(公告)号：US20240004009A1

公开(公告)日：2024-01-04

申请号：US18215877

申请日：2023-06-29

Applicant: Siemens Healthcare Limited

Inventor： Adrian Mark Thomas ,  Simon Chorley ,  Nicholas Aley

IPC: G01R33/38 ,  G01R33/34 ,  G01R33/385 ,  G01R33/421 ,  G01R33/3815

CPC classification number: G01R33/3804 ,  G01R33/34053 ,  G01R33/385 ,  G01R33/4215 ,  G01R33/3815

Abstract: The disclosure relates to a magnetic resonance imaging device comprising a main magnet, a gradient system including at least one gradient coil, a thermal bus structure, a shield structure arranged between the gradient system and the main magnet and a cryocooler including a cold head, wherein the shield structure is configured to reduce a transport of heat energy to the main magnet and wherein the main magnet comprises a magnet spacer configured for spacing individual coils of the main magnet, wherein the thermal bus structure comprises at least one thermal bus element extending through the magnet spacer for providing a thermal connection between the cold head of the cryocooler and the shield structure.

公开(公告)号：US20240004008A1

公开(公告)日：2024-01-04

申请号：US18215870

申请日：2023-06-29

Applicant: Siemens Healthcare Limited

Inventor： Stephan Biber ,  Nicholas Aley

IPC: G01R33/38 ,  G01R33/421 ,  G01R33/3815

CPC classification number: G01R33/3804 ,  G01R33/4215 ,  G01R33/3815

Abstract: A magnetic resonance imaging device including a main magnet, a gradient system with at least one gradient coil, a cryocooler, a thermal bus structure, and an electromagnetic shield arranged between the gradient system and the main magnet. The electromagnetic shield includes spaced shield elements. The electromagnetic shield is configured to provide an electromagnetic shielding of the main magnet from a magnetic field generated by the at least one gradient coil. The thermal bus structure includes thermal bus elements configured to provide a thermal connection between the plurality of spaced shield elements and a cold head of the cryocooler. At least two thermal bus elements of thermal bus elements include different heat transfer properties to provide individualized temperature control of the spaced shield elements.

公开(公告)号：US11841405B2

公开(公告)日：2023-12-12

申请号：US17849045

申请日：2022-06-24

Applicant: Siemens Healthcare Limited

Inventor： Jianping He ,  Bin He ,  Yu Xin Nie ,  Kui Xiang Gu

IPC: G01R33/34 ,  G01R33/48 ,  G01R33/38

CPC classification number: G01R33/34 ,  G01R33/3802 ,  G01R33/48

Abstract: A processing tool for a superconducting magnet of an MRI system is disclosed. The processing tool comprising a first winding part and a second winding part. The first winding part is used as a winding framework for winding a main coil half-body. The second winding part is used as a winding framework for winding a shield coil. The processing tool has an infusion cavity. The infusion cavity comprises a main coil accommodating zone, a shield coil accommodating zone, and a linking zone. The main coil accommodating zone is used for accommodating the main coil half-body wound on the first winding part. The shield coil accommodating zone is used for accommodating the shield coil wound on the second winding part. The main coil accommodating zone is connected to the shield coil accommodating zone via the linking zone. The processing tool helps to reduce the difficulty of superconducting magnet processing.

公开(公告)号：US11675035B2

公开(公告)日：2023-06-13

申请号：US17600898

申请日：2019-04-02

Applicant: Siemens Healthcare Limited

Inventor： Michael John Disney Mallett ,  Jonathan Noys ,  Adrian Mark Thomas

IPC: G01R33/3815 ,  H01F6/06

CPC classification number: G01R33/3815 ,  H01F6/06

Abstract: An electromagnet for a Magnetic Resonance Imaging (MRI) apparatus. The electromagnet includes a coil configured to generate a magnetic field. The coil has a first axially outer surface, and a support element configured to mount the coil in the MRI. The support element is bonded to the first axially outer surface of the coil.

公开(公告)号：US11454692B2

公开(公告)日：2022-09-27

申请号：US16108573

申请日：2018-08-22

Applicant: Siemens Healthcare Limited ,  King's College London

Inventor： Rene Botnar ,  Giulia Ginami ,  Radhouene Neji ,  Claudia Prieto

IPC: G01R33/567 ,  G01R33/48 ,  G01R33/56 ,  G01R33/50 ,  G01R33/36 ,  G01R33/561

Abstract: In a method of performing magnetic resonance (MR) imaging, an MR apparatus, and a computer-readable medium during a first cardiac cycle of a subject, a first imaging sequence is generated for application to a subject. The first imaging sequence has a preparatory pulse and an inversion recovery pulse following the preparatory pulse. First signals emitted from the subject in response to the first imaging sequence are detected, and first image data are generated based on the first signals. During a second cardiac cycle following the first cardiac cycle, a second imaging sequence is generated for application to the subject. The second imaging sequence has a preparatory pulse. Second signals emitted from the subject in response to the second imaging sequence are detected, and second image data are generated based on the second signals.

公开(公告)号：US20220102041A1

公开(公告)日：2022-03-31

申请号：US17490309

申请日：2021-09-30

Applicant: Siemens Healthcare Limited

Inventor： William James Bickell ,  Simon Chorley ,  Zhi Qiang Long ,  Jun Zhao Wu

IPC: H01F6/04 ,  H01F6/06

Abstract: A superconducting magnet arrangement including: an outer vacuum container (OVC) housing magnet coils; a cryogen vessel thermally linked to the magnet coils; a cold head sock accommodating a cold head, with a thermal contact provided between the cold head and the magnet coils; tubes linking the interior of the cryogen vessel with the interior of the cold head sock; and a thermosiphon circuit defined by the cryogen vessel, the tubes, and the cold head sock. Pre-cooling and removal of ice build-up may be performed using the thermosiphon circuit.

公开(公告)号：US20210405135A1

公开(公告)日：2021-12-30

申请号：US17289043

申请日：2019-10-18

Applicant: Siemens Healthcare Limited

Inventor： Paul William Edgley

IPC: G01R33/28 ,  G01R33/34 ,  G01R33/3815 ,  H01F6/02

Abstract: An anomaly detection system comprising a diagnostic interface and a data acquisition system capable of recording data indicating variation of voltages at tapping points in a superconducting magnet. Data representing those variations in voltages may be stored as a data log and a processor may analyze the data in order to identify a mechanical impact.

公开(公告)号：US20210183551A1

公开(公告)日：2021-06-17

申请号：US16771560

申请日：2018-11-21

Applicant: Siemens Healthcare Limited

Inventor： William James Bickell ,  Ashley Fulham ,  Martin Gambling ,  Martin Howard Hempstead ,  Graeme Hyson ,  Paul Lewis ,  Nicholas Mann ,  Michael Simpkins

IPC: H01F6/00

Abstract: An assembly having a cylindrical structure supported by a support structure having at least one support element, the support structure being cradle shaped, such that vertical and horizontal loads are taken largely as shear forces by respective interface surfaces which are substantially parallel to the direction of the respective load, and vertical loads are taken in a direction substantially tangential to the cylindrical surface of the cylindrical structure.

公开(公告)号：USD874651S1

公开(公告)日：2020-02-04

申请号：US29629941

申请日：2017-12-18

Applicant: Siemens Healthcare Limited

Designer： David Barber ,  Anders Mortensen ,  Philip Alan Charles Walton