Hironori Nishibori

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To evaluate the usefulness of Fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (18-F FDG-PET/CT) in the prediction of Fuhrman pathological grades of renal clear cell carcinoma (cRCC). This retrospective study was approved by our institutional review board, and written informed consent was waived. Thirty-one patients with(More)
OBJECTIVE We aimed to elucidate the accuracy and limitations of [(18)F]-fluoro-L-dihydroxyphenylalanine ([(18) F]DOPA) positron emission tomography (PET) for Japanese patients with congenital hyperinsulinism. Although [(18)F]DOPA PET is reported to be useful for precisely localizing the focal form of congenital hyperinsulinism, previous reports are mostly(More)
OBJECTIVE The purpose of our study was to assess the correlation between the quantitative and qualitative imaging findings on unenhanced and gadolinium-enhanced MR images and the intensity of vascular endothelial growth factor (VEGF) expression in hepatocellular carcinomas and in the surrounding nontumorous liver. MATERIALS AND METHODS The intensities of(More)
BACKGROUND Preoperative identification of the focal form of congenital hyperinsulinism is important for avoiding unnecessary subtotal pancreatectomy. However, neither the incidence nor the histological spectrum of the disease is known for Japanese patients. AIMS The aim of the study was to elucidate the molecular and histological spectrum of congenital(More)
OBJECTIVE The purpose of our study was to determine the optimal scan delays required for hepatic arterial and portal venous phase imaging and for the detection of hypervascular hepatocellular carcinomas (HCCs) in contrast-enhanced MDCT of the liver using a bolus-tracking program. SUBJECTS AND METHODS CT images (2.5-mm collimation, 5-mm thickness with no(More)
OBJECTIVE To determine the optimal scan delay required for fixed duration contrast injection in contrast-enhanced biphasic multidetector-row CT for the liver and the detection of hypervascular hepatocellular carcinoma (HCC). METHODS CT images (2.5-mm collimation, 5-mm thickness with no intersectional gap) were obtained after an intravenous bolus injection(More)
Anastomotic leakage is a serious problem in the laparoscopic resection of rectal cancer. Although stapling devices and techniques for colorectal or coloanal anastomosis have been improved, laparoscopic anastomosis is still technically difficult and the rate of leakage is high. To resolve this problem, a new stapling device (the ContourTM Curved Cutter(More)
PURPOSE The purpose of this work was to define the optimal margins for gadolinium-enhanced T(1)-weighted magnetic resonance imaging (Gd-MRI) and T(2)-weighted MRI (T(2)-MRI) for delineating target volumes in planning radiation therapy for postoperative patients with newly diagnosed glioblastoma multiforme (GBM) by comparison to carbon-11-labeled methionine(More)
This study aimed to clarify and compare the short- and midterm surgical outcomes of laparoscopic surgery for rectal and rectosigmoid cancer. Between June 1992 and December 2004, 131 selected patients with cancer of the rectum (n = 60) and rectosigmoid (n = 71) underwent laparoscopic surgery. The indications for laparoscopy included a preoperative diagnosis(More)
PURPOSE To prospectively compare 320-detector volumetric and 64-detector helical computed tomographic (CT) images of the pancreas for depiction of anatomic structures, image noise, and radiation exposure. MATERIALS AND METHODS This study was approved by the institutional review board, and written informed consent was obtained. A total of 154 patients (85(More)