Tidebrant G, Lukes P, Tylén U
Department of Radiology, Sahlgrenska Sjukhuset, University of Gothenburg, Sweden.
Acta Radiol. 1990 May;31(3):265-8.
Computed tomography (CT) of the liver was performed in 53 patients before, during and 4 to 6 hours after intravenous administration of approximately 60 g of iodine in metrizoate. At delayed CT, contrast medium was observed in the extrabiliary ducts in 20 patients (38%) and in the gallbladder in 28 (68%) of the 41 patients with no previous cholecystectomy. The increase in attenuation of liver parenchyma at delayed CT compared with the non-enhanced baseline CT ranged between 2 and 26 HU (mean 13.9). The material was divided into three groups with regard to liver function: normal, intermediate and pathologic. In the normal group contrast medium was observed in the gallbladder in 81 per cent and in the bile ducts in 57 per cent and the mean increase in attenuation of the liver parenchyma was 14.5 HU. In the pathologic group the same parameters were 40 per cent, 7 per cent and 10.6 HU, respectively. Contrast medium in the gallbladder and biliary ducts improved the information about anatomy. Pathology of the gallbladder and tumour growth along the hepatoduodenal ligament were better demonstrated. Delayed CT is a simple and non-invasive technique that may improve planning of liver surgery.
对53例患者在静脉注射约60克碘美拉酸前、注射期间及注射后4至6小时进行肝脏计算机断层扫描（CT）。在延迟CT检查中，41例既往未行胆囊切除术的患者中有20例（38%）在肝外胆管中观察到造影剂，28例（68%）在胆囊中观察到造影剂。与未增强的基线CT相比，延迟CT时肝实质的衰减增加范围在2至26亨氏单位（平均13.9）之间。根据肝功能将这些患者分为三组：正常、中等和病理组。正常组中，81%的患者胆囊中观察到造影剂，57%的患者胆管中观察到造影剂，肝实质衰减的平均增加为14.5亨氏单位。在病理组中，相同参数分别为40%、7%和10.6亨氏单位。胆囊和胆管中的造影剂改善了解剖结构信息。胆囊病变和沿肝十二指肠韧带的肿瘤生长情况显示得更好。延迟CT是一种简单且无创的技术，可能会改善肝脏手术的规划。
