Kazuhiko Hashimoto

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PURPOSE There has been one report that tissue blood flow (TBF) quantification with xenon CT was effective in predicting the therapeutic response to an anticancer drug in pancreatic cancer. The purpose of this study was to evaluate the correlation between the TBF of pancreatic tumors calculated with xenon CT and those with perfusion CT, in order to evaluate(More)
A 54-year-old man underwent an operation for colon cancer histologically diagnosed as moderately differentiated adenocarcinoma with clinical staging of Dukes C. He was prescribed carmofur for adjuvant chemotherapy. A follow-up computed tomography scan done 6 months later revealed two new low-density areas in the liver. A diagnosis of metastatic(More)
This study assessed the utility of CT perfusion for quantitative assessment of liver function and fibrosis. Tissue blood flow (TBF), tissue blood volume (TBV), mean transit time (MTT) and hepatic arterial fraction (HAF) were measured with CT perfusion using the deconvolution algorithm in 38 patients with chronic liver diseases and 10 patients without liver(More)
The purpose of this study was to compare measurements of hepatic tissue blood flow (TBF) calculated by xenon and perfusion CT. Seven patients with normal liver and eight with chronic liver disease underwent both xenon and perfusion CT. During xenon CT examinations, serial abdominal CT scans were obtained every minute before and during 4 min of(More)
BACKGROUND The role of portal hemodynamics on liver regeneration after partial hepatectomy is not fully understood. The aim of our study was to characterize the effects of portal hemodynamics using a novel rat model. METHODS We established a rat model of a portohepatic shunt with a 70% hepatectomy (PHS model), in which the portal pressure remained stable(More)
Hepatic arterial and portal venous anomalies in living liver donors are not uncommon. Modified surgical techniques may be required in such circumstances, although the safety of the living donor must always be given top priority. We describe here a successful portal venous reconstruction in a living donor with an anomalous hepatic arterial and portal venous(More)
OBJECTIVE The purpose of this study was to separately measure the arterial and portal venous tissue blood flow (TBF) of hepatocellular carcinoma (HCC) with a noninvasive method using xenon inhalation CT (xenon-CT) and to differentiate between well-differentiated HCCs and moderately and poorly differentiated HCCs. MATERIALS AND METHODS Total, arterial and(More)
We report herein the case of a patient in whom pulmonary and splenic metastases from renal cell carcinoma (RCC) were successfully treated by surgical excision. A 69-year-old man who underwent left nephrectomy for RCC 17 months before was suspected to have a pulmonary metastasis based on computed tomography (CT) findings. Partial resection of the left lower(More)
BACKGROUND End-stage liver disease is often accompanied by large spontaneous splenorenal shunts and thrombosed portal vein. Renoportal anastomosis for spontaneous splenorenal shunts in living-donor liver transplantations is one of the solutions for the treatment of these patients. However, the long-term outcome, portal venous hemodynamics after liver(More)
A 66-year-old man with multiple hepatocellular carcinomas(HCCs) underwent transcatheter arterial chemoembolization(TACE) twice and radiofrequency ablation(RFA) twice at another hospital in June 2009. In November 2010, abdominal computed tomography(CT) revealed a solitary lymph node metastasis( 23 mm in diameter) in the hepatoduodenal ligament, after which(More)