Invention Grant
US08148982B2 Spin locked balanced steady-state free precession (slSSFP) with off-resonance spin locked pulses interleaved with imaging gradients
有权
旋转锁定平衡稳态自由进动（slSSFP），具有与成像梯度交错的非共振自旋锁定脉冲
- Patent Title: Spin locked balanced steady-state free precession (slSSFP) with off-resonance spin locked pulses interleaved with imaging gradients
- Patent Title (中): 旋转锁定平衡稳态自由进动（slSSFP），具有与成像梯度交错的非共振自旋锁定脉冲
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Application No.: US12426703Application Date: 2009-04-20
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Publication No.: US08148982B2Publication Date: 2012-04-03
- Inventor: Walter R. T. Witschey , Mark A. Elliott , Ari Borthakur , Ravinder Reddy
- Applicant: Walter R. T. Witschey , Mark A. Elliott , Ari Borthakur , Ravinder Reddy
- Applicant Address: US PA Philadelphia
- Assignee: The Trustees Of The University Of Pennsylvania
- Current Assignee: The Trustees Of The University Of Pennsylvania
- Current Assignee Address: US PA Philadelphia
- Agency: Woodcock Washburn, LLP
- Main IPC: G01V3/00
- IPC: G01V3/00
Abstract:
A spin locked balanced steady-state free precession (slSSFP) pulse sequence combines a balanced gradient echo acquisition with an off-resonance spin lock pulse for fast MRI. The transient and steady-state magnetization trajectory is solved numerically using the Bloch equations and is shown to be similar to balanced steady-state free precession (bSSFP) for a range of T2/T1 and flip angles, although the slSSFP steady-state could be maintained with considerably lower RF power. In both simulations and brain scans performed at 7T, slSSFP is shown to exhibit similar contrast and SNR efficiency to bSSFP, but with significantly lower power.
Public/Granted literature
- US20100264920A1 SPIN LOCKED BALANCED STEADY-STATE FREE PRECESSION (SLSSFP) Public/Granted day:2010-10-21
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