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Appareil d'imagerie à résonance magnétique nucléaire pour améliorer le contraste d'images de vaisseaux sanguins
专利权人:
Toshiba Medical Systems Corporation
发明人:
申请号:
EP11151529.2
公开号:
EP2309286B1
申请日:
2009.07.17
申请国别(地区):
EP
年份:
2019
代理人:
摘要:
A magnetic resonance imaging apparatus is disclosed for performing a method to enhance the contrast when imaging blood vessels, wherein one data set is acquired via flow-sensitive black blood (BB) imaging, such that the phase of the image is related to the flow velocity in each voxel of the images and another data set is acquired via white blood (WB) imaging, such that flow regions have a higher amplitude than static regions. The phase of the BB images is corrected using a low-pass filter and then the corrected phase is filtered to enhance the flow regions, such that the phase in flow regions is closer to +/-180°. A weighted difference of the WB image and the resulting corrected image leads to an hybrid magnetic resonance angiography image with enhanced contrast between flow regions (blood vessels) and static regions.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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