发明授权
- 专利标题: Image reconstruction method in nuclear magnetic resonance imaging apparatus
- 专利标题(中): 核磁共振成像装置中的图像重建方法
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申请号: US243907申请日: 1994-05-17
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公开(公告)号: US5502384A公开(公告)日: 1996-03-26
- 发明人: Chitose Nakaya , Yoshitaka Bito , Etsuji Yamamoto , Hiroshi Nishimura , Hiroyuki Takeuchi , Shigeru Watanabe , Akihiro Miyajima , Hitoshi Arai
- 申请人: Chitose Nakaya , Yoshitaka Bito , Etsuji Yamamoto , Hiroshi Nishimura , Hiroyuki Takeuchi , Shigeru Watanabe , Akihiro Miyajima , Hitoshi Arai
- 申请人地址: JPX Tokyo JPX Tokyo
- 专利权人: Hitachi, Ltd.,Hitachi Medical Corporation
- 当前专利权人: Hitachi, Ltd.,Hitachi Medical Corporation
- 当前专利权人地址: JPX Tokyo JPX Tokyo
- 优先权: JPX5-121120 19930524
- 主分类号: A61B5/055
- IPC分类号: A61B5/055 ; G01R33/28 ; G01R33/561 ; G01R33/565 ; G01R33/20
摘要:
In an image reconstruction method in a nuclear magnetic resonance imaging apparatus, the method comprises first and second steps to get detected data S.sub.I for at least about half of region inclusive of an origin and data S.sub.IV in a region symmetric with respect to a line passing through an origin on one of axes from the detected region in the acquired data space and parallel to the other axis, respectively, third and fourth steps to perform inverse Fourier transform on the data S.sub.I and S.sub.IV, respectively, a fifth step to get a complex conjugate value of the result obtained from Step 3, a sixth step to get a complex conjugate value of the result obtained from Step 4, a seventh step to calculate a phase map from the results obtained from the second, third, fourth, fifth and sixth steps, an eighth step to multiply the result obtained from step 6 by the phase map obtained from step 7 and to obtain a phase corrected data, and a ninth step to sum the result obtained from the third step and the result obtained from the eighth step. The method can thus obtain the whole reconstructed image.