发明名称 |
PREPARING THE MAGNETIZATION STATE OF A SAMPLE FOR ALTERNATING REPETITION TIME STEASDY STATE FREE PRECESSION MAGNETIC RESONANCE IMAGING |
摘要 |
Techniques and systems for magnetic resonance imaging. In one aspect, preparatory pulse sequences precede alternating repetition time steady state free precession (ATR SSFP) pulse sequences to enable image acquisition before reaching a steady-state equilibrium. The design of the preparatory sequences is based on a two step process: First an oscillatory residue is expressed in terms of a window (e.g., a Kaiser-Bessel window) and scale parameters. Second the oscillatory residue is minimized to determine the scale parameters according to a desired application (e.g. ATR SSFP, optimized for fat, water, etc.) The preparation scheme described in this specification can be applied to arbitrary repetition times and RF phase cycling combinations. |
申请公布号 |
WO2009151662(A3) |
申请公布日期 |
2010.03.04 |
申请号 |
WO2009US35784 |
申请日期 |
2009.03.02 |
申请人 |
UNIVERSITY OF SOUTHERN CALIFORNIA;LEE, HSU-LEI;NAYAK, KRISHNA S. |
发明人 |
LEE, HSU-LEI;NAYAK, KRISHNA S. |
分类号 |
A61B5/055;G05F1/00 |
主分类号 |
A61B5/055 |
代理机构 |
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