发明名称 |
Time and memory optimized method of acquiring and reconstructing multi-shot 3D MRI data |
摘要 |
A three-dimensional fast spin echo (FSE) scan is performed by stepping (220) through a plurality of phase encode k-space views from a computed view list (210). The view list is computed such that (i) magnetic resonance echoes having a selected image contrast are encoded in the center of k-space, (ii) adjacent data lines in k-space have similar contrast, and (iii) common planes of data lines in k-space are completed at regular intervals. As each data line is read, it is Fourier transformed (230) and stored (240) within a fast-access memory (52). Once a plane of data lines is acquired, it is Fourier transformed (250) along a second direction using a plurality of parallel processors (54). The twice-transformed data is stored (260) in conventional memory (56). Once all of the phase encode views on the view list are acquired, a final Fourier transform (60) along a third direction is performed (270), rendering a volumetric image representation. The method of data acquisition uses fewer memory buffers and takes less time than conventional methods.
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申请公布号 |
US6414487(B1) |
申请公布日期 |
2002.07.02 |
申请号 |
US20000719000 |
申请日期 |
2000.11.22 |
申请人 |
PHILIPS MEDICAL SYSTEMS (CLEVELAND), INC. |
发明人 |
ANAND CHRISTOPHER K.;HALAMEK JAMES A.;STECKNER C. MICHAEL |
分类号 |
G01R33/54;(IPC1-7):G01V3/00 |
主分类号 |
G01R33/54 |
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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