Adamkiewicz动脉的磁共振血管造影：一项针对胸主动脉瘤的术前研究。
MRA of the Adamkiewicz artery: a preoperative study for thoracic aortic aneurysm.
作者信息
Yamada N, Takamiya M, Kuribayashi S, Okita Y, Minatoya K, Tanaka R
机构信息
Department of Radiology, National Cardiovascular Center, Suita, Osaka, Japan.
出版信息
J Comput Assist Tomogr. 2000 May-Jun;24(3):362-8. doi: 10.1097/00004728-200005000-00002.
PURPOSE
The purpose of this work was to investigate the ability of MR angiography (MRA) to visualize the Adamkiewicz artery (AKA) as a preoperative study of thoracic aortic aneurysm to prevent ischemic injury of the spinal cord.
METHOD
Twenty-six patients scheduled for surgical or endovascular stent-graft repair of thoracic aortic aneurysm were studied with a three-dimensional contrast MRA. Data acquisition was repeated two times following injection of Gd-DTPA. Source images were processed with multiplanar reconstruction and maximum intensity projection.
RESULTS
The AKA was identified in 69% (18/26). In three patients, selective angiography of the intercostal artery confirmed the AKA at the same level and side predicted by MRA. The anterior spinal artery and the anterior medullary vein were observed in 50% (13/26) and 65% (17/26), respectively.
CONCLUSION
Contrast MRA is a promising technique to visualize the AKA noninvasively as a preoperative evaluation of thoracic aortic aneurysms.
目的
本研究旨在探讨磁共振血管造影（MRA）术前显示Adamkiewicz动脉（AKA）以预防胸主动脉瘤脊髓缺血性损伤的能力。
方法
对26例计划接受胸主动脉瘤手术或血管内支架植入修复的患者进行三维对比增强MRA检查。注射钆喷酸葡胺（Gd-DTPA）后重复采集数据两次。源图像经多平面重建和最大密度投影处理。
结果
69%（18/26）的患者显示出AKA。3例患者的肋间动脉选择性血管造影证实了MRA预测的同一水平和同一侧的AKA。分别有50%（13/26）和65%（17/26）的患者观察到脊髓前动脉和延髓前静脉。
结论
对比增强MRA作为胸主动脉瘤术前评估无创显示AKA是一种有前景的技术。
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