Kudo Kohsuke, Terae Satoshi, Asano Takeshi, Oka Masaki, Kaneko Kenshi, Ushikoshi Satoshi, Miyasaka Kazuo
Department of Radiology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
AJNR Am J Neuroradiol. 2003 Jan;24(1):13-7.
Our purpose was to evaluate the visualization of the artery of Adamkiewicz (AKA) and the anterior spinal artery (ASA) by using multi-detector row CT. Preoperative detection of the AKA and ASA is important for prevention of ischemic complications of thoracoabdominal aortic surgery.
Data from contrast-enhanced CT of the abdomen of 19 consecutive patients with known or suspected liver disease were evaluated. The scanning range was set from the level of the diaphragm to the lower edge of the liver. After bolus injection of contrast material (100 mL of iohexol, 350 mgI/mL, 5 mL/s), arterial phase scans were obtained by using a four-channel multi-detector row CT scanner. The scanning parameters included a detector row configuration of 4 x 2 mm, a pitch of 5:1, a gantry rotation speed of 0.5 s, 120 kVp, and 150 mAs. Arterial phase coronal multiplanar reconstruction scans obtained parallel to the spinal cord were evaluated by two neuroradiologists. The detectability of ASA and AKA was analyzed.
The AKA was visualized on the scans of 13 of 19 patients (68%). The segmental level of AKA origin ranged from T10 to L2. The AKA originated from the left side in nine patients (69%) and the right side in four patients (31%). The ASA was visualized on the scans of all patients (100%). For 16 of the 19 patients, the ASA was detected in its full length from the cranial edge of the scan range. However, the ascending branch of the ASA distal to the junction of the AKA was not detected for the remaining three patients.
The AKA and ASA can be visualized by using multi-detector row CT with the use of IV administered contrast material. Multi-detector row CT could be a useful tool in the evaluation of spinal vascular structures.
我们的目的是利用多排探测器CT评估Adamkiewicz动脉（AKA）和脊髓前动脉（ASA）的显影情况。术前检测AKA和ASA对于预防胸腹主动脉手术的缺血性并发症很重要。
对19例已知或疑似肝病患者的腹部增强CT数据进行评估。扫描范围设定为从膈肌水平至肝脏下缘。经静脉团注对比剂（100 mL碘海醇，350 mgI/mL，5 mL/s）后，使用四通道多排探测器CT扫描仪进行动脉期扫描。扫描参数包括探测器排配置为4×2 mm，螺距为5:1，机架旋转速度为0.5秒，120 kVp和150 mAs。由两名神经放射科医生评估与脊髓平行获得的动脉期冠状多平面重建扫描。分析ASA和AKA的可检测性。
19例患者中有13例（68%）的扫描显示了AKA。AKA起源的节段水平范围为T10至L2。9例患者（69%）的AKA起源于左侧，4例患者（31%）起源于右侧。所有患者（100%）的扫描均显示了ASA。19例患者中有16例在扫描范围的头端边缘检测到了全长的ASA。然而，其余3例患者未检测到AKA连接处远端的ASA升支。
使用静脉注射对比剂的多排探测器CT可以显示AKA和ASA。多排探测器CT可能是评估脊髓血管结构的有用工具。
