公开(公告)号：US12232858B2

公开(公告)日：2025-02-25

申请号：US18127538

申请日：2023-03-28

Applicant: Howard J. Halpern ,  Boris Epel

Inventor： Howard J. Halpern ,  Boris Epel

IPC: A61B5/055 ,  G01R33/341 ,  G01R33/36 ,  G01R33/60 ,  G01V3/10

Abstract: An apparatus and method for improved S/N measurements useful for electron paramagnetic resonance imaging in situ and in vivo, using high-isolation transmit/receive surface coils and temporally spaced pulses of RF energy (e.g., in some embodiments, a RF pi pulse) having an amplitude sufficient to rotate the magnetization by 180 degrees followed after varied delays, by a second RF pulse having an amplitude half that of the initial pulse to rotate the magnetization by, e.g., 90 degrees (a pi/2 pulse), to the plane orthogonal to the static field where it evolves for a short time. Then a third RF pi pulse sufficient to rotate the magnetization by, e.g., 180 degrees, forms an echo (in some embodiments, the second and third pulses are from the same signal as the first pulse but are phase shifted by 0, 90, 180, or 270 degrees to reduce signal artifact), to image human body.

公开(公告)号：US12228625B2

公开(公告)日：2025-02-18

申请号：US18017881

申请日：2021-07-07

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Steffen Weiss ,  Christoph Günther Leussler

IPC: G01R33/36 ,  G06T7/70

Abstract: A system (SYS) and related method for supporting MR imaging. The system (SYS) comprises a logic (CL) to receive a measurement from RF sensors (SS1-8) arrangeable outside a bore (BR) of an MR imaging apparatus (IA). The logic processes the measurement to establish i) whether there is at least one surface RF coil present that is not electrically coupled to circuitry (SPC) of the MR imaging apparatus (IA) and/or ii) to localize at least one surface RF coil on or at a patient table (PT) of the MR imaging apparatus.

公开(公告)号：US12210077B2

公开(公告)日：2025-01-28

申请号：US18049619

申请日：2022-10-25

Applicant: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.

Inventor： Zhen Wang ,  Shao Che ,  Hai Lu ,  Xianwen Fan

IPC: G01R33/36 ,  H03F3/19

Abstract: The present disclosure provides a magnetic resonance imaging (MRI) radio frequency (RF) coil assembly. The MRI RF coil assembly may include one or more coils and one or more control circuits. Each of the one or more coils may include a first end and a second end. Each of the one or more control circuits may electrically connect the first end and the second end of one of the one or more coil. Each of the one or more control circuits may be configured to adjust an operation of the coil that is electrically connected with the control circuit based on an input control signal. The one or more control circuits may be located at different regions.

公开(公告)号：US20250020744A1

公开(公告)日：2025-01-16

申请号：US18604934

申请日：2024-03-14

Applicant: Fahad Alraddadi ,  William Monski ,  Tobias Sun ,  Vajrakaran Sachdev ,  Michael Voit ,  Georoge Beluk

Inventor： Fahad Alraddadi ,  William Monski ,  Tobias Sun ,  Vajrakaran Sachdev ,  Michael Voit ,  Georoge Beluk

IPC: G01R33/341 ,  G01R33/36 ,  G01R33/54

Abstract: A Handheld Diagnostic Interface Device (HDID) that includes means for connecting the Handheld Diagnostic Interface Device (HDID) to a frequency-testing power source, said Handheld Diagnostic Interface Device (HDID) adapted for: (a) measuring the status of certain key electrical conditions for the coil; (b) receiving a response back from the signals initially aimed at the coil in question; (c) processing those responses received; and (d) transferring the measured electronic status (using a specific code number for the coil) to a remote storage area on the internet. A method of use is also disclosed.

公开(公告)号：US20250004075A1

公开(公告)日：2025-01-02

申请号：US18576388

申请日：2022-06-20

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Alexander James Pyne ,  Kevin Grace

IPC: G01R33/36 ,  G01R33/3815 ,  H01F6/06

Abstract: An apparatus for making an electrical connection between a superconducting component disposed in a cryogenic chamber and an electrical device disposed outside the cryogenic chamber is described. The apparatus includes a coil comprising a plurality of helical loops and disposed in the cryogenic chamber; and an actuator configured to compress and expand the coil between a first state and a second state. In the first state, the coil has a first electrical resistance and a first thermal conductance and in the second state the coil has a second electrical resistance and a second thermal conductance.

公开(公告)号：US12181545B2

公开(公告)日：2024-12-31

申请号：US17434220

申请日：2019-12-05

Applicant: Forschungszentrum Jülich GmbH

Inventor： Suk Min Hong ,  Nadim Joni Shah ,  Chang-Hoon Choi ,  Jörg Felder

IPC: G01R33/36 ,  A61B5/055 ,  G01R33/34

Abstract: A coil assembly for use as a transmission and/or receiving coil in an MR system comprises a dipole antenna assembly with multiple dipole antennas. Connection elements are converted from an electrically conductive state to an electrically non-conductive state. In the electrically conductive state, the dipole antennas form a cylindrical volume coil and/or a conductor loop assembly, in particular a flat conductor loop assembly. The connection elements comprise blocking circuits which automatically block when a high-frequency alternating voltage with a frequency corresponding to the blocking frequency of the connection element blocking circuits is applied to the coil assembly.

公开(公告)号：US12181543B2

公开(公告)日：2024-12-31

申请号：US17918201

申请日：2021-04-12

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Yuan Ping Li ,  Deyi Qiu ,  Biao Xie ,  Yu Zhao ,  Bing Wu

IPC: G01R33/34 ,  G01R33/36

Abstract: For a receiving surface coil for detecting nuclear magnetic resonance signals from a patient, a solution for an easy adaptation of the receiving surface coil to the anatomy of the patient is disclosed. This is achieved by a receiving surface coil for detecting nuclear magnetic resonance signals from a patient, the receiving surface coil comprising: a flexible housing with an opening, a set of RF loop elements housed in the flexible housing, wherein the set of RF loops comprises at least a central loop element running around the opening in the flexible housing and a number of loop elements arranged around the opening.

公开(公告)号：US20240410963A1

公开(公告)日：2024-12-12

申请号：US18737408

申请日：2024-06-07

Applicant: GE Precision Healthcare LLC

Inventor： Lei Gao ,  Hanbei Zhang ,  Wei Chang ,  Huijing Zhou ,  Yongchuan Lai

IPC: G01R33/36

Abstract: Embodiments of the present application provide a magnetic resonance scanning and imaging method, and a magnetic resonance imaging system. The method includes: determining a pulse to be adjusted in a scan sequence, the pulse to be adjusted including a first radio-frequency pulse and a first gradient pulse applied along with the first radio-frequency pulse; determining an adjustment factor based on the first gradient pulse and a minimum repetition time related to a specific absorption rate of radio-frequency energy; adjusting the scan sequence based on the adjustment factor; and, using the adjusted scan sequence, performing a diagnostic scan on a site to be examined, to obtain a magnetic resonance image.

公开(公告)号：US20240402272A1

公开(公告)日：2024-12-05

申请号：US18694442

申请日：2022-08-29

Applicant: KONINKLIJKE PHILIPS N.V.

Inventor： Christoph Günther Leussler ,  Oliver Lips ,  Peter Vernickel ,  Peter Caesar Mazurkewitz ,  Christian Findeklee ,  Josef Scholz ,  Ingo Schmale

IPC: G01R33/3415 ,  G01R33/34 ,  G01R33/36

Abstract: A magnetic resonance (MR) coil construction system includes MR coil sheets (20) comprising electrically conductive MR coil elements or MR coil element portions (22) disposed in electrically insulating sheets (26). The MR coil sheets have edges with connecting mechanisms (34. 48) configured to connect the MR coil sheets to construct an MR coil array (44).

公开(公告)号：US12150748B2

公开(公告)日：2024-11-26

申请号：US17756280

申请日：2020-11-27

Applicant: MR Instruments, Inc.

Inventor： Thomas Rheineck ,  Lawrence Tanenbaum ,  Mark Jensen ,  Michael Lancial ,  Grant Thompson ,  Leon Ricord ,  Juan Martinez ,  Robert Bushey ,  Brian Fabian ,  Khai Tran

IPC: A61B5/055 ,  G01R33/34 ,  G01R33/36

Abstract: A wearable, open and pliable conforming MRI receiver coil system having an assembly of MRI imaging coils, each configured in a framework to simultaneously apply or position MRI receiver antennae and medical implements such as ultrasound transducers against the skull or skin of a patient. The system is configured to perform an MRI imaging and operation of the one or more medical implements simultaneously.