定量磁共振血管造影在锁骨下动脉盗血综合征评估中的应用：5例报告
Quantitative magnetic resonance angiography in the evaluation of the subclavian steal syndrome: report of 5 patients.
作者信息
Bauer Andrew M, Amin-Hanjani Sepideh, Alaraj Ali, Charbel Fady T
机构信息
Department of Neurosurgery, University of Illinois at Chicago, Chicago, IL 60612-5970, USA.
出版信息
J Neuroimaging. 2009 Jul;19(3):250-2. doi: 10.1111/j.1552-6569.2008.00297.x. Epub 2008 Sep 24.
BACKGROUND AND PURPOSE
The indications for surgical or endovascular treatment of patients with subclavian stenosis (SS) or occlusion remain controversial. Multiple studies have shown that in most patients, SS results in steal that is evident radiographically, but requires no treatment.
METHODS
This report describes 5 cases of SS, analyzed with phase contrast quantitative MRA (QMRA). QMRA provides quantitative blood flow data previously unavailable. A quantitative ischemic forearm challenge is also introduced using the QMRA technique.
RESULTS
A basilar flow index, basilar artery (BA) flow as a percentage of total intracranial flow was defined. This varied from 12.6% to 20.4%. All patients in this report had VA flow reversal. None had BA flow reversal
CONCLUSION
This report features novel methods using QMRA to identify ischemic patterns in the BA indicative of significant subclavian steal syndrome (SSS) in patients with SS.
背景与目的
锁骨下动脉狭窄（SS）或闭塞患者的手术或血管内治疗指征仍存在争议。多项研究表明，在大多数患者中，SS导致的盗血在影像学上很明显，但无需治疗。
方法
本报告描述了5例SS患者，采用相位对比定量磁共振血管造影（QMRA）进行分析。QMRA可提供以前无法获得的定量血流数据。还引入了使用QMRA技术的定量缺血性前臂激发试验。
结果
定义了基底动脉血流指数，即基底动脉（BA）血流占颅内总血流的百分比。该指数在12.6%至20.4%之间变化。本报告中的所有患者椎动脉血流均发生逆转。无一例基底动脉血流逆转。
结论
本报告介绍了使用QMRA识别基底动脉缺血模式的新方法，这些模式表明SS患者存在严重的锁骨下动脉盗血综合征（SSS）。
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