Nitatori T, Dohno S, Hanaoka H, Takei R, Hachiya J, Furuya Y
Department of Radiology, Kyorin University, School of Medicine.
Nihon Igaku Hoshasen Gakkai Zasshi. 1994 Nov 25;54(13):1263-9.
In order to establish the optimal injection technique for abdominal digital subtraction angiography (DSA), flow rate measurement was performed under various combinations of all the currently available iodinated contrast materials with two types of coaxial microcatheters. In vitro study was done utilizing a plastic model of the abdominal aorta with the tip of the catheter positioned at the presumed proper hepatic artery. A total of 20ml of contrast material was injected by a pressure injector at a rate of 3 ml/sec at 300 or 600 psi, and actual flow volume was measured. Imaging capability was evaluated by calculating iodine delivery rates (IDRs). IDRs were highest in iopamidol 300 mgI/ml and iomeperol 300 mgI/ml, nonionic monomeric contrast materials of medium concentration. The results suggest that the best quality DSA images with injection to the proper hepatic artery using a coaxial microcatheter can be obtained with nonionic monomeric contrast materials of medium concentration.
为了确立腹部数字减影血管造影（DSA）的最佳注射技术，在所有现有碘化造影剂与两种同轴微导管的各种组合下进行了流速测量。利用腹主动脉塑料模型进行体外研究，将导管尖端置于推测的肝固有动脉处。通过压力注射器以3ml/秒的速率在300或600磅力/平方英寸下注入总共20ml造影剂，并测量实际流量。通过计算碘输送率（IDR）评估成像能力。在碘帕醇300mgI/ml和碘美普尔300mgI/ml（中等浓度的非离子单体造影剂）中，碘输送率最高。结果表明，使用同轴微导管向肝固有动脉注射时，采用中等浓度的非离子单体造影剂可获得质量最佳的DSA图像。
