发明名称 |
Image reconstructing device for use in magnetic resonance imaging apparatus |
摘要 |
A magnetic resonance signal is detected at a plurality of different periods of time in accordance with the phase shift of a plurality of chemical shift components while varying the intensity of a gradient magnetic field with time, a plurality of magnetic resonance signal thus obtained are used for estimating a magnetic resonance signal due to only a predetermined chemical shift component, the phase rotation of the predetermined chemical shift component is corrected in the estimated resonance signal, and further a blur due to chemical shift components other than the predetermined one is corrected to obtain a tomogram formed of only the predetermined chemical shift component. Alternatively, one measured resonance signal is modified by an image reconstruction algorithm peculiar to each of a plurality of chemical shift components, to obtain tomograms corresponding to the chemical shift components.
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申请公布号 |
US4996480(A) |
申请公布日期 |
1991.02.26 |
申请号 |
US19890418224 |
申请日期 |
1989.10.06 |
申请人 |
HITACHI, LTD. |
发明人 |
MAEDA, AKIRA;SANO, KOICHI;YOKOYAMA, TETSUO;KOIZUMI, HIDEAKI |
分类号 |
G01R33/54;A61B5/055;G01R33/32;G01R33/485;G01R33/565 |
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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