发明授权
US06263228B1 Method and apparatus for providing separate water-dominant and fat-dominant images from single scan single point dixon MRI sequences
有权
用于从单次扫描单点狄克逊MRI序列提供单独的水主导和脂肪占优势图像的方法和装置
- 专利标题: Method and apparatus for providing separate water-dominant and fat-dominant images from single scan single point dixon MRI sequences
- 专利标题(中): 用于从单次扫描单点狄克逊MRI序列提供单独的水主导和脂肪占优势图像的方法和装置
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申请号: US09141338申请日: 1998-08-27
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公开(公告)号: US06263228B1公开(公告)日: 2001-07-17
- 发明人: Weiguo Zhang , David M. Kramer , Andrew Li
- 申请人: Weiguo Zhang , David M. Kramer , Andrew Li
- 主分类号: A61B505
- IPC分类号: A61B505
摘要:
A method and apparatus for producing water-dominant and fat-dominant MR signal data for use in constructing separate images from single-scan single-point Dixon MRI sequences is disclosed. The effects of field inhomogeneities are removed by quantitating the signal phase by taking the argument of the MR signal multiplied by itself. A region-growing algorithm guided by a polynomial model is used to unwrap the phase which is then used to separately generate water-pixel data and fat-pixel data for producing separate images. The invention can be used for constructing images from both 2-D and 3-D spin-echo and/or field-echo acquisitions.