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We observed the hemodynamic changes at the level of the hepatic parenchyma induced by transcatheter arterial embolization (TAE) for hepatocellular carcinoma in 22 patients. TAE was performed by administration of a mixture of iodized oil, adriamycin, and mitomycin C, followed by injection of gelatin sponge particles (1-mm pieces). Perfusion measurements (arterial and portal) were done by dynamic computed tomography (CT). Arterial perfusion was increased two to six days after TAE (0.146 +/- 0.073 ml/min/ml, P < 0.0002) compared with that before TAE (0.064 +/- 0.039), but decreased again one month after TAE (0.086 +/- 0.038). Portal perfusion was decreased two to six days after TAE (0.541 +/- 0.180, P < 0.001) compared with that before TAE (0.733 +/- 0.263) and was grossly unchanged one month after TAE (0.651 +/- 0.214). We suspected that these perfusion changes were due to acute inflammatory responses. Quantification of tissue perfusion by dynamic CT was useful for studying hemodynamic changes after TAE.
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