在多排探测器计算机断层扫描中，两种不同碘浓度的对比剂在肝动脉三维计算机断层血管造影中的比较：一项随机研究。
Comparison of 2 contrast materials with different iodine concentrations in 3-dimensional computed tomography angiography of the hepatic artery at multi-detector-row computed tomography: a randomized study.
作者信息
Suzuki Hiromasa, Shibamoto Yuta, Oshima Hidekazu, Takeuchi Mitsuru, Ito Masato, Hara Masaki
机构信息
Department of Radiology, Nagoya City University Graduate School of Medical Sciences, Nagoya City, Japan.
出版信息
J Comput Assist Tomogr. 2007 Nov-Dec;31(6):840-5. doi: 10.1097/rct.0b013e3180471bc1.
OBJECTIVE
To investigate differences in visual evaluation of the hepatic arteries and contrast enhancement of the vessels and liver at 3-dimensional (3D) computed tomography (CT) angiography by 2 different concentrations of contrast materials.
METHODS
Eighty patients were randomly assigned into groups A and B receiving contrast materials with iodine concentrations of 300 and 370 mg/mL, respectively. The total iodine load (600 mg/kg), iodine injection time (25 seconds), and saline flush time (10 seconds) were identical.
RESULTS
Seventy-two patients were evaluable. There were no differences between the 2 groups in visual evaluation of the hepatic arteries at 3D CT angiography. Contrast enhancement of the aorta at the late arterial phase and the liver at the portal phase was significantly higher in group B than in group A, but otherwise, there were no differences. Enhancement of the aorta and portal vein was higher in women than in men at some phases.
CONCLUSIONS
With the same iodine dose and injection time, the concentration of contrast materials did not seem to be important in obtaining optimal images at 3D CT angiography of the hepatic artery.
目的
通过两种不同浓度的对比剂，研究三维（3D）计算机断层扫描（CT）血管造影对肝动脉的视觉评估以及血管和肝脏对比增强的差异。
方法
80例患者随机分为A组和B组，分别接受碘浓度为300和370mg/mL的对比剂。总碘负荷（600mg/kg）、碘注射时间（25秒）和生理盐水冲洗时间（10秒）相同。
结果
72例患者可评估。在3D CT血管造影对肝动脉的视觉评估中，两组之间没有差异。B组在动脉晚期主动脉和门静脉期肝脏的对比增强明显高于A组，但在其他方面没有差异。在某些阶段，女性主动脉和门静脉的增强高于男性。
结论
在相同的碘剂量和注射时间下，对比剂浓度在肝动脉3D CT血管造影获得最佳图像方面似乎并不重要。
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