Invention Grant
- Patent Title: MR electric properties tomography without contrast agent
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Application No.: US17617955Application Date: 2020-06-19
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Publication No.: US12019134B2Publication Date: 2024-06-25
- Inventor: Ulrich Katscher , Johan Samuel Van Den Brink , Jochen Keupp
- 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: EP 181445 2019.06.20
- International Application: PCT/EP2020/067092 2020.06.19
- International Announcement: WO2020/254571A 2020.12.24
- Date entered country: 2021-12-10
- Main IPC: G01R33/561
- IPC: G01R33/561 ; A61B5/00 ; A61B5/0536 ; G01R33/56 ; G01R33/563

Abstract:
A method of magnet resonance (MR) imaging of an object includes MR signal acquisition in a single scan providing information for electric properties imaging (EPT), which may include a phase map as well as tissue boundaries. The method includes: subjecting the object to a multi echo steady state imaging sequence or a fast spectroscopic imaging sequence that includes RF pulses and switched magnetic field gradients, wherein two or more echo signals are generated after each RF excitation; acquiring the echo signals; deriving a magnitude image and a phase map from the acquired echo signals, which phase map represents the spatial RF field distribution induced by the RF pulses in the object; and reconstructing an electric conductivity map from the magnitude image and from the phase map, wherein tissue boundaries are derived from at least the magnitude image.
Public/Granted literature
- US20220308148A1 MR ELECTRIC PROPERTIES TOMOGRAPHY WITHOUT CONTRAST AGENT Public/Granted day:2022-09-29
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