Yamagami T, Arai Y, Takeuchi Y, Nakamura T, Inaba Y, Matsueda K, Nishimura T
Department of Radiology, Kyoto Prefectural University of Medicine, 465 Kajii, Kawaramachi-Hirokoji, Kamigyo, Kyoto, 602-0841, Japan.
Br J Radiol. 2000 Oct;73(874):1042-5. doi: 10.1259/bjr.73.874.11271895.
This study was conducted to investigate the haemodynamics of the liver parenchyma in the presence of intrahepatic portosystemic venous shunt. 3 patients with intrahepatic portosystemic venous shunts and 24 patients with normal intrahepatic haemodynamics underwent both CT arterial portography and CT during hepatic arteriography. Angiographic findings with helical CT were compared, and CT attenuated values were measured in both groups. The liver parenchyma on CT arterial portography had lower attenuation than on CT during hepatic arteriography in all patients with intrahepatic portosystemic venous shunts. Overall average CT attenuation was 92.2 +/- 7.7 Hounsfield units (HU) on CT arterial portography and 149.9 +/- 8.5 HU after CT during hepatic arteriography, with the opposite findings in all patients without intrahepatic portosystemic venous shunt: CT attenuation 142.0 +/- 25.7 HU on CT arterial portography and 100.7 +/- 16.4 HU after CT during hepatic arteriography. In conclusion, the portal venous supply to the liver parenchyma decreased due to intrahepatic portosystemic venous shunts, with a compensatory increase in hepatic arterial blood supply.
本研究旨在探讨肝内门体静脉分流存在时肝实质的血流动力学。3例肝内门体静脉分流患者和24例肝内血流动力学正常的患者接受了CT动脉门静脉造影和肝动脉造影CT检查。比较螺旋CT血管造影结果，并测量两组的CT衰减值。在所有肝内门体静脉分流患者中，CT动脉门静脉造影时肝实质的衰减低于肝动脉造影CT时。CT动脉门静脉造影时总体平均CT衰减为92.2±7.7亨氏单位（HU），肝动脉造影CT后为149.9±8.5 HU，而在所有无肝内门体静脉分流的患者中结果相反：CT动脉门静脉造影时CT衰减为142.0±25.7 HU，肝动脉造影CT后为100.7±16.4 HU。总之，肝内门体静脉分流导致肝实质的门静脉供血减少，肝动脉供血代偿性增加。
