发明名称 |
Image reconstruction method in nuclear magnetic resonance imaging system |
摘要 |
In an nuclear magnetic resonance imaging system for acquiring a tomographic image of an object of interest at a high speed by use of time-varying gradient magnetic fields, a weighting factor is used in reconstructing an image through the calculation of a correlation of data of a detected nuclear magnetic resonance signal with data of a reference signal, thereby controlling the point spread function and/or the signal-to-noise ratio in each point on the reconstruction image. Also, the effect of relaxation, chemical shift and/or static magnetic field inhomegeneity, which would otherwise degradate the image quality, can be corrected. Further, a velocity of the object of interest at each point on the reconstruction image can be measured.
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申请公布号 |
US4875012(A) |
申请公布日期 |
1989.10.17 |
申请号 |
US19880153199 |
申请日期 |
1988.02.08 |
申请人 |
HITACHI, LTD. |
发明人 |
MAEDA, AKIRA;SANO, KOICHI;YOKOYAMA, TETSUO;KOIZUMI, HIDEAKI;MIZUNO, HIROTAKA |
分类号 |
F02B3/06;G01R33/56;G01R33/565;(IPC1-7):G01R33/20 |
主分类号 |
F02B3/06 |
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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