发明授权
- 专利标题： Method of performing magnetic resonance angiography using two-dimensional imaging and de-rated gradients
- 专利标题（中）： 使用二维成像和降额梯度进行磁共振血管造影的方法
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申请号： US09301246申请日： 1999-04-28
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公开(公告)号： US06259940B1公开(公告)日： 2001-07-10
- 发明人: Matthew A. Bernstein , John Huston, III
- 申请人： Matthew A. Bernstein , John Huston, III
- 主分类号： A61B5055
- IPC分类号： A61B5055
摘要：
In an MRI system using high-performance gradient hardware, a method includes de-rating selected lobes in a 2DTOF imaging pulse sequence; employing images from the two-dimensional imagery to detect the presence of disease; and performing three-dimensional contrast-enhanced MRA if disease was detected at a sufficiently high level to make three-dimensional imaging useful. By de-rating selected lobes of the 2DTOF imaging pulse sequence, sensitivity to carotid stenosis at or above the clinically important range of 60-70% is achieved.