Magnetic resonance angiography of mesenteric arteries. A review.

Magnetic resonance angiography of mesenteric arteries. A review.
复制标题

肠系膜动脉磁共振血管造影。

DOI:
10.1097/00004424-199809000-00023
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发表时间:
1998
影响因子:
6.7
通讯作者:
Li,KC
Li,KC
中科院分区:
医学1区
文献类型:
--
作者:
Heiss,SG;Li,KC

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在评估肠系膜血管疾病方面,MRI技术一直在不断发展。对比剂增强磁共振血管成像(MRA)可以提供可复制的高分辨率、高对比度的动脉和静脉系膜血管图像,并可以通过检测节段性延迟的肠系膜或肠壁强化来检测节段性缺血。电影相位对比MRA可以提供有关主要肠系膜动脉和静脉内血流速度和流量的额外信息。实时MRI可以在任何平面上提供肠系膜血管的交互式可视化,并结合适当的肠道造影剂,可以用于监测全局和节段性小肠运动。通过活体磁共振血氧仪,血流无关的血液T2松弛测量允许确定肠系膜循环的血氧饱和度。这些MR技术可以结合用于评估肠系膜循环的解剖和功能方面。
There has been continued development of MRI techniques for evaluating mesenteric vascular disease. Contrast-enhanced magnetic resonance angiography (MRA) can provide reproducible high resolution, high contrast images of the arterial and venous mesenteric vasculature and may allow detection of segmental ischemia by detection of segmental delayed mesenteric or bowel wall enhancement. Cine phase-contrast MRA can provide additional information about the rate and volume of flow within the major mesenteric arteries and veins. Real-time MRI can provide interactive visualization of the mesenteric vessels in any plane, and with suitable bowel contrast, it can be used to monitor global and segmental small bowel motility. With in vivo MR oximetry, flow independent measurements of the T2 relaxation of blood allow the oxygen saturation of the mesenteric circulation to be determined. These MR techniques can be combined for evaluating both anatomic and functional aspects of the mesenteric circulation.
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