发明名称 |
Method and system for optimized presaturation in magnetic resonance |
摘要 |
<p>A method, system and computer program product is provided for optimizing pre-saturation in Magnetic Resonance Imaging. The optimization is done by setting a correct transmitter frequency of RF pre-pulses for all scan slices. A B.sub.0 magnetic field map for each scan slice of a scan volume is obtained (202) from the B.sub.0 magnetic field distribution in the scan volume. The B.sub.0 magnetic field maps are used to calculate (206) the median value of the B.sub.0 magnetic field over each scan slice. A first frequency of RF pre-pulses is obtained (204) by a standard procedure. A second frequency of RF pre-pulses is then calculated (214) for each scan slice by adding the median value of the B.sub.0 magnetic field over the scan slice to the first frequency of RF pre-pulses. Thereafter RF pre-pulses at the second frequency is applied (216) to the scan slice. <IMAGE> <IMAGE></p> |
申请公布号 |
EP1528403(A2) |
申请公布日期 |
2005.05.04 |
申请号 |
EP20040256641 |
申请日期 |
2004.10.27 |
申请人 |
GE MEDICAL SYSTEMS GLOBAL TECHNOLOGY COMPANY LLC |
发明人 |
AGILANDAM, KASI VISWANATHAN;KOLUR, HEMALATHA;MARIAPPAN, MASANAM;SWAMINATHAN, VENKATA RAMANAN |
分类号 |
A61B5/055;G01R33/48;G01R33/54;G01R33/565;(IPC1-7):G01R33/54 |
主分类号 |
A61B5/055 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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