Yasuhiko Shimatani

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Dual contrast magnetic resonance imaging (DCMR) with combined use of a negative contrast medium, chondroitin sulfate iron colloid (CSIC), and a positive contrast medium, Gd-DTPA, was attempted in 20 cases of hepatocellular carcinoma. Spin echo T1 weighted and T2 weighted images (T1WI, T2WI), and T1 weighted images 15 min after intravenous injection of(More)
OBJECTIVE Angiosarcoma is a rare malignant neoplasm with a poor prognosis. A retrospective study was performed to accumulate radiotherapy (RT) data. METHODS Data from 17 patients with angiosarcoma of the face and scalp (AFS) who were treated with definitive RT between January 1999 and July 2011 were retrospectively analysed. The total radiation dose was(More)
We evaluated the relation of atrial rhythm to a clinical course of treatment in 147 patients diagnosed with dilated cardiomyopathy (DCM). Thirty-six of the patients (24%) had either transient (9 patients) or persistent (27 patients) atrial fibrillation (AF). Compared with DCM patients with sinus rhythm (SR), the AF patients did not differ in age, left(More)
Using a 1.5 T MR imaging unit, T1- and T2-weighted images were obtained before and after i.v. administration of chondroitin sulfate iron colloid (CSIC) in order to differentiate hepatocellular carcinoma (n = 20) from adenomatous hyperplasia without atypia (n = 16). Differentiation was made from the tumor-liver contrast to noise ratio (CNR) and visual(More)
PURPOSE To evaluate the results and significance of radiotherapy for carcinoma involving the external auditory canal or middle ear. MATERIALS AND METHODS Six patients underwent radiotherapy. Five patients had squamous cell carcinoma and one had ceruminous adenocarcinoma. In addition to radiotherapy, two patients underwent complete resection, and the other(More)
OBJECTIVE The purpose of this study was to retrospectively evaluate the effectiveness of the model for end-stage liver disease (MELD) score compared with the Child-Pugh classification in patients who received three-dimensional conformal radiotherapy (3D CRT) for hepatocellular carcinoma (HCC) with portal vein tumour thrombosis (PVTT) by analyzing toxicity(More)
The aim of this Phase I clinical trial was to assess the feasibility and safety of capecitabine-based preoperative chemoradiotherapy (CRT) combined with bevacizumab and to determine the optimal capecitabine dose for Japanese patients with locally advanced rectal cancer. Patients with cT3/T4 rectal cancer were eligible. Bevacizumab was administered at 5(More)
We created volumetric modulated arc therapy (VMAT) plans for 31 prostate cancer patients using one of three treatment planning systems (TPSs)--ERGO++, Monaco, or Pinnacle--and then treated those patients. A dose of 74 Gy was prescribed to the planning target volume (PTV). The rectum, bladder, and femur were chosen as organs at risk (OARs) with specified(More)
Double contrast MR imaging with combined use of chondroitin sulfate iron colloid (CSIC) and Gd-DTPA was attempted in 3 cases of cholangiocellular carcinoma (CCC). In all cases, nonenhanced spin echo T1- and T2-weighted images, and T1-weighted images after i.v. injection of Gd-DTPA were obtained. Within one week, the MR sequences were repeated one hour after(More)
The latest version of the World Health Organization (WHO) histologic classification of salivary gland malignancies was published in 2005. To contribute to data accumulation on the basis of this latest version, a retrospective study was performed. Participants comprised 27 patients who underwent postoperative radiotherapy between 2000 and 2013. Two, eight,(More)