- 专利标题: Direct measurement of the B0-off-resonance field during magnetic resonance fingerprinting
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申请号: US16339405申请日: 2017-09-22
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公开(公告)号: US11041925B2公开(公告)日: 2021-06-22
- 发明人: Jan Jakob Meineke , Thomas Erik Amthor , Peter Koken , Karsten Sommer
- 申请人: KONINKLIJKE PHILIPS N.V.
- 申请人地址: NL Eindhoven
- 专利权人: KONINKLIJKE PHILIPS N.V.
- 当前专利权人: KONINKLIJKE PHILIPS N.V.
- 当前专利权人地址: NL Eindhoven
- 优先权: EP16192638 20161006
- 国际申请: PCT/EP2017/073974 WO 20170922
- 国际公布: WO2018/065233 WO 20180412
- 主分类号: G01R33/44
- IPC分类号: G01R33/44 ; G01R33/24 ; G01R33/56 ; G01R33/50
摘要:
A processor controls an MRI system with pulse sequence commands to acquire magnetic resonance data according to a magnetic resonance fingerprinting protocol during multiple pulse repetitions. The pulse sequence commands control the magnetic resonance imaging system to cause gradient induced spin rephasing at least twice during each of the multiple pulse repetitions, and to acquire at least two magnetic resonance signals during each of the multiple pulse repetitions. Each of the at least two magnetic resonance signals is measured during a separate one of the gradient induced spin rephasing. The magnetic resonance data includes the at least two magnetic resonance signals acquired during each of the multiple pulse repetitions. The processor further at least partially calculates a B0-off-resonance map using the magnetic resonance data, and generates at least one magnetic resonance parametric map by comparing the magnetic resonance data with a magnetic resonance fingerprinting dictionary.