摘要
本文报道了４５例临床证实的头颈部闭塞性血管疾病的ＴＯＦ法ＭＲＡ诊断。结果表明：ＭＲＡ较好地显示了血管狭窄的部位、程度和范围，其中三维法较二维法显示病变为准确；钆增强ＭＲＡ提高了病变显示的精确性，并较可靠地显示了血管硬化斑与管壁溃疡。ＭＲＡ对狭窄处涡流敏感，常致其血流信号丢失而产生假阳性结果或夸大血管狭窄程度与范围。可以认为，ＭＲＡ是中风病因诊断和随访最好的无创性检查方法。
Forty-five patients with occlusive disease of arteries in the head and neck examined by MRI and TOF MRA were reviewed in this paper The results showed that MRA accurately demonstrated the location, region and degree of all the artery stenoses and occlusions, while 3D TOF technique was more accurate than 2D TOF technique in the depiction of artery stenosis MRA also reliably detected the ulceration and plaque formation combining with MRI or after IV Gd-DTPA injection However, MRA maybe overestimated the grade of stenosis due to its sensitivity to complex flow and relatively poor spatial resolution We think MRA is the best noninvasive method to get an etiologic diagnosis and follow-up of stroke We also discussed the pathology of atherosclerosis
出处
《中国医学影像学杂志》
CSCD
1996年第1期43-46,共4页
Chinese Journal of Medical Imaging
关键词
脑血管疾病
磁共振血管造影
诊断
cerebrovascular disorders
magnetic resonance angiography
diagnosis
