[主动脉弓上血管的磁共振血管造影]
[MR angiography of the supraaortic vessels].
作者信息
Wintersperger B J, Huber A, Preissler G, Holzknecht N, Helmberger T, Petsch R, Billing A, Scheidler J, Reiser M
机构信息
Institut für Klinische Radiologie, Klinikum der Universität München, Grosshadern, Ludwig-Maximilians-Universität.
出版信息
Radiologe. 2000 Sep;40(9):785-91. doi: 10.1007/s001170050824.
PURPOSE
To compare high resolution contrast-enhanced MR angiography (MRA) and digital subtraction angiography (DSA) in the assessment of supraaortic vessel stenosis.
METHODS
14 patients with suspicion of cerebrovascular disease or upper limb ischemia underwent selective DSA and high resolution contrast enhanced MRA employing a new Panoramic-Array coil. Stenosis assessment in comparison to DSA followed NASCET criteria. Additionally signal-/noise ratios (SNR) were evaluated to assess contrast enhancement.
RESULTS
Diagnostic image quality was achieved in all patients. Sensitivity and specificity for assessing high-grade stenosis of the supraaortic vessels were 100% and 96% respectively. In the assessment of high-grade common or internal carotid artery stenosis sensitivity and specificity was 100%.
CONCLUSION
High resolution contrast enhanced supraaortic MRA combined with new coil systems allow for a reliable assessment of stenoses along the whole vessel course including the aortic arch. Previous stent procedures limit its use in postinterventional follow-up.
目的
比较高分辨率对比增强磁共振血管造影（MRA）和数字减影血管造影（DSA）在评估主动脉弓上血管狭窄方面的效果。
方法
14例怀疑患有脑血管疾病或上肢缺血的患者接受了选择性DSA检查以及采用新型全景阵列线圈的高分辨率对比增强MRA检查。与DSA相比，狭窄评估遵循北美症状性颈动脉内膜切除术试验（NASCET）标准。此外，还评估了信号/噪声比（SNR）以评估对比增强情况。
结果
所有患者均获得了诊断性图像质量。评估主动脉弓上血管重度狭窄的敏感性和特异性分别为100%和96%。在评估颈总动脉或颈内动脉重度狭窄时，敏感性和特异性均为100%。
结论
高分辨率对比增强主动脉弓上MRA结合新型线圈系统能够可靠地评估包括主动脉弓在内的整个血管行程中的狭窄情况。先前的支架置入手术限制了其在介入治疗后随访中的应用。
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