Miwako Nozaki

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OBJECTIVES To review the imaging findings of renal epithelioid angiomyolipomas. METHODS Eight patients treated at two institutions were pathologically diagnosed as having epithelioid angiomyolipoma. All of them underwent computed tomography, and four underwent magnetic resonance imaging. The tumor size, existence of fat, heterogeneity, computed tomography(More)
The purpose of this study was to evaluate the feasibility and potential usefulness of unenhanced magnetic resonance (MR) hepatic portal perfusion using arterial spin labeling (ASL) among healthy volunteers and hepatocellular carcinoma patients. The five healthy volunteers underwent unenhanced MR perfusion with inversion time 2 (TI2) values at 500-ms(More)
Purpose. Patients who have undergone low anterior resection (LAR) of the rectum occasionally complain of symptoms related to impaired neorectal evacuation. Using scintigraphy, we assessed neorectal evacuation in 22 patients who underwent LAR and straight anastomosis, and correlated the results with clinical defecatory function, clinical factors, and(More)
PURPOSE To determine the current patterns of practice in Japan and to investigate factors that may make clinicians reluctant to use single-fraction radiotherapy (SF-RT). METHODS AND MATERIALS Members of the Japanese Radiation Oncology Study Group (JROSG) completed an Internet-based survey and described the radiotherapy dose fractionation they would(More)
OBJECTIVE To investigate late adverse events in Japanese women treated with breast-conserving surgery plus conventional fractionated radiation therapy in 24 hospitals. METHODS This is a prospective investigation into patients who have been followed for 3 years or more after the completion of radiation therapy. The women visited hospitals for routine(More)
PURPOSE To investigate the feasibility of perfusion imaging using an arterial spin labeling (ASL) technique for breast cancer. MATERIALS AND METHODS Thirteen female patients with primary breast cancers were included in this study. All examinations were performed on 1.5 Tesla MRI systems. Visual evaluations of the colored perfusion map and MRI perfusion(More)
PURPOSE To demonstrate a coaxial needle technique for direct percutaneous puncture embolization of type II endoleaks. TECHNIQUE The technique is demonstrated in a 79-year-old woman and an 80-year-old man who developed type II endoleaks after endovascular repair of thoracic and internal iliac artery aneurysms, respectively. Expansion of the aneurysms(More)
PURPOSES We conducted a study to analyze the clinicopathological characteristics of breast cancer in Japan registered to the Japanese Breast Cancer Registry of the Japanese Breast Cancer Society (JBCS). Trends in the management of breast cancer patients in Japan were also analyzed. PATIENTS AND METHODS More than 250,000 breast cancer patients were(More)
In 1996, the Japan Wilms Tumor Study (JWiTS) group was founded to elucidate the efficacy and safety of the regimen established by the National Wilms Tumor Study (NWTS) group in the USA, and a multicenter cooperative study (JWiTS-1) was started in Japan. This report reviews the results of JWiTS-1. A total of 307 patients with malignant renal tumor were(More)