Rieker O, Düber C, Schmiedt W, Neufang A, Pitton M, Schweden F
Klinik für Radiologie, Johannes-Gutenberg-Universität Mainz.
Rofo. 1996 Jul;165(1):17-23. doi: 10.1055/s-2007-1015708.
To evaluate if CT angiography is able to image all features necessary for the preoperative planning of abdominal aortic aneurysms (accessory renal arteries, stenoses or occlusions of renal and iliac arteries, patency of inferior mesenteric artery).
CT angiography and DSA were performed on 27 patients with abdominal aortic aneurysms. CT angiography was performed using a protocol that covered the abdominal aorta and the pelvic arteries with a single spiral acquisition (contrast dose: 150 ml, collimation: 5 mm, table feed: 7.5 mm/s, increment of reconstruction: 2 mm). Maximum intensity projections (MIP) and axial scans were compared with the results of intraarterial DSA.
Using axial scans and subvolume MIP, CTA accurately defined 7/8 accessory renal arteries, 13/13 occlusions and 9/12 high grade stenoses of renal and pelvic arteries. High-grade stenoses of the iliac arteries were underestimated in two cases and overlooked in one case. CT angiography was superior to DSA in imaging the inferior mesenteric artery. CT angiography precisely diagnosed 33 aneurysms of the iliac, renal and coeliac arteries.
CT angiography using a single administration of intravenous contrast may replace preoperative DSA in most cases of abdominal aortic aneurysm.
评估CT血管造影能否显示腹主动脉瘤术前规划所需的所有特征（副肾动脉、肾动脉和髂动脉的狭窄或闭塞、肠系膜下动脉的通畅情况）。
对27例腹主动脉瘤患者进行了CT血管造影和数字减影血管造影（DSA）。CT血管造影采用单一螺旋采集方案覆盖腹主动脉和盆腔动脉（对比剂剂量：150 ml，准直：5 mm，床速：7.5 mm/s，重建增量：2 mm）。将最大密度投影（MIP）和轴位扫描结果与动脉内DSA结果进行比较。
使用轴位扫描和亚体积MIP，CT血管造影准确显示了8条副肾动脉中的7条、13条肾动脉和盆腔动脉闭塞以及12条肾动脉和盆腔动脉高度狭窄中的9条。2例髂动脉高度狭窄被低估，1例被漏诊。在肠系膜下动脉成像方面，CT血管造影优于DSA。CT血管造影准确诊断了33例髂动脉、肾动脉和腹腔干动脉瘤。
在大多数腹主动脉瘤病例中，单次静脉注射对比剂的CT血管造影可能替代术前DSA。
