Invention Grant
- Patent Title: Magnetic resonance imaging using motion-compensated image reconstruction
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Application No.: US17285115Application Date: 2019-10-14
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Publication No.: US11543482B2Publication Date: 2023-01-03
- Inventor: Tim Nielsen , Jan Hendrik Wuelbern
- Applicant: KONINKLIJKE PHILIPS N.V.
- Applicant Address: NL Eindhoven
- Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee: KONINKLIJKE PHILIPS N.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP18200643 20181016
- International Application: PCT/EP2019/077786 WO 20191014
- International Announcement: WO2020/078907 WO 20200423
- Main IPC: G01V3/00
- IPC: G01V3/00 ; G01R33/565 ; G01R33/385 ; G01R33/48 ; G01R33/56 ; G01R33/561 ; G01R33/567

Abstract:
The invention relates to a method of MR imaging of an object (10). It is an object of the invention to enable MR imaging in the presence of motion of the imaged object, wherein full use is made of the acquired MR signal and a high-quality MR image essentially free from motion artefacts is obtained. The method of the invention comprises the steps of: generating MR signals by subjecting the object (10) to an imaging sequence comprising RF pulses and switched magnetic field gradients; acquiring the MR signals as signal data over a given period of time (T); subdividing the period of time into a number of successive time segments (SO, S1, S2, . . . Sn); deriving a geometric transformation (DVF1, DVF2, . . . DVFn) in image space for each pair of consecutive time segments (S0, S1, S2, . . . Sn), which geometric transformation (DVF1, DVF2, . . . DVFn) reflects motion occurring between the two time segments of the respective pair; and reconstructing an MR image from the signal data, wherein a motion compensation is applied according to the derived geometric transformations (DVF1, DVF2, . . . DVFn). Moreover, the invention relates to an MR device (1) and to a computer program for an MR device (1).
Public/Granted literature
- US20210356547A1 MAGNETIC RESONANCE IMAGING USING MOTION-COMPENSATED IMAGE RECONSTRUCTION Public/Granted day:2021-11-18
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