磁共振血管造影的无创血管诊断。

M Cejna
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引用次数: 0

摘要

目前,3D磁共振血管造影能够快速、无创地描绘颈部、胸腔、腹部和四肢的动脉血管,在动脉瘤、夹层和动脉狭窄的诊断评估中具有很高的灵敏度和特异性。顺磁造影剂的静脉注射是在造影剂到达时间后进行的,因此可以快速获取血管腔和周围软组织之间高对比度的3D数据集。在一次屏气内检查胸部和腹部,四肢周围和主动脉上血管可以用更长的序列想象,甚至增加空间分辨率。快速对比增强3D磁共振血管造影与流量测量相结合,有可能取代传统数字减影血管造影获得的额外功能信息。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
[Noninvasive vascular diagnosis with magnetic resonance angiography].

Currently contrast medium-enhanced, 3D magnetic resonance angiography enables fast and non-invasive depiction of the arterial vessels in the neck, thorax, abdomen, and limbs, which allows high sensitivity and specificity in the diagnostically evaluation of aneurysms, dissection and arterial stenosis. Intravenous bolus administration of a paramagnetic contrast medium is performed after timing of the bolus arrival time, thus enabling rapid acquisition of 3D datasets with high contrast between vessel lumen and surrounding soft tissue. Thorax and abdomen are examined within one breath-hold, the periphery of the extremities and the supra-aortal vessels can be imagined with longer sequences and even increased spatial resolution. Fast contrast-enhanced 3D magnetic resonance angiography--in combination with flow measurements--carries the potential to replace the additional functional information obtained by conventional digital subtraction angiography.

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