Osamu Oshikawa

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OBJECTIVE The aim of this study was to examine the usefulness of dynamic sonography in the characterization of pancreatic tumors. MATERIALS AND METHODS IV contrast-enhanced pancreatic sonography (dynamic sonography) with Levovist was performed in 43 patients with pancreatic mass lesions (32 with pancreatic adenocarcinomas, four with inflammatory(More)
OBJECTIVE Our objectives were to propose and evaluate a dynamic sonography protocol for the characterization of hepatic tumors. SUBJECTS AND METHODS The subjects were 107 patients with focal liver lesions that initially had been found on conventional sonograms. The final diagnoses for the lesions were hepatocellular carcinoma in 60 patients,(More)
This was a prospective study to evaluate tissue harmonic imaging (THI) for the diagnosis of focal liver lesions. A total of 15 reviewers read 100 randomly arranged liver images, a fundamental grey-scale image (FGI) and a THI (transmitted: 2 MHz, received: 4 MHz) of each of 50 patients (29 with liver cirrhosis, 42 with focal lesions) taken from the same(More)
BACKGROUND The prognosis of pancreatic ductal adenocarcinoma remains very poor, but is better in patients with a small tumor without local infiltration. The identification of the sign of high risk for pancreatic cancer will lead to early detection and improvement of the prognosis of this disease. The purpose of this study was to evaluate the main pancreatic(More)
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