[A study of the drug distribution on intra-hepatic arterial infusion chemotherapy; how much difference between continuous infusion and rapid infusion?].

The subjects were 41 cases with implantable reservoir systems for unresectable hepatic tumors. We evaluated the difference in drug distribution between intra-hepatic arterial continuous infusion and rapid infusion using hepatic perfusion scintigraphy by 99mTc-macroaggregated albumin via reservoirs. The 41 cases were divided into 2 groups (A and B) according to the imaging of the perfusion scintigraphy. There were 17 cases in group A with equal distribution and 24 cases in group B with a different distribution between the continuous infusion and the rapid infusion. The 24 cases in group B were subdivided into groups according to the distribution of 99mTc-MAA in and around liver. In some cases the distribution pattern after rapid infusion improved more than with continuous infusion. These results suggested that the infusion method must be selected for every case.