%0 Journal Article
%T Technology of the Magnetic Resonace Angiography and its Realization<br>磁共振血管成象技术及实现
%A Wang Jinhuai
%A <br>王金淮
%J 中国图象图形学报
%D 1996
%I 
%X Magnetic Resonance angiography (MRA) is introduced, which is a kind of technology of MRI applied in blood flow. MRA shows only the blood flow and suppresses the static tissue. Various aspects about this technology such as potential clinical application, background, methods and pluse sequences are presented. The techniques of MRA have been sorted into two classes. The first class is the time-of-flight methods which use the effets on NMR signal caused by blood flowing in or out of the imaging plane. The second class is the phase contrast methods which rely on motioninduced phase shifts in transverse spin magnetization. On the low-field MRI system (0.15T) made by ourself, a special pulse sequece has been designed and the arterial, veinal and arterial-veinal angiography can be obtained separatly,and the results are satisfatory. The present difficulties in MRA are also presented and discussed.
%K Angiography technology
%K Blood vessels
%K Blood flow imaging
%K Magnetic resonance angiography
%K Magnetic resonance imaging (MRI)<br>血管成象技术
%K 磁共振血流成象
%K 磁共振成象
%K 磁共振血管图
%K 医学影像诊断
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=A514751AF0BC95340B7CB6110707C6C9&yid=8A15F8B0AA0E5323&vid=CA4FD0336C81A37A&iid=E158A972A605785F&sid=556C1A86E372B606&eid=3622B70F9C54A9CC&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=0