核磁気共鳴イメージング装置
- 专利权人:
- 株式会社日立メディコ
- 发明人:
- 鎌田 康弘,板垣 博幸,瀧澤 将宏,高橋 哲彦
- 申请号：
- JP2007147865
- 公开号：
- JP5230967B2
- 申请日:
- 2007.06.04
- 申请国别(地区):
- JP
- 年份:
- 2013
- 代理人:
- 摘要：
PROBLEM TO BE SOLVED: To provide favorable image contrast, and reduce artifact in an SAR-reduced non-rectangular frame imaging method.
SOLUTION: The flip angle is varied in non-rectangular frame measurement to reduce SAR. In re-disposing each set of sampling data of obtained echo signals in rectangular frame coordinates, a weight coefficient is determined to act in such a way that sampling data of favorable SNR are disposed at a lattice point in a low space frequency zone in space k with a high contribution ratio. Echo signal obtaining time is also taken into consideration for the weight coefficient for reducing contribution of low-grade data.
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- 来源网站：
- 中国工程科技知识中心
