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OBJECTIVE The objective of our study was to report the clinical and imaging features of isolated dissection of the superior mesenteric artery (SMA) and describe our imaging classification of this disease entity. SUBJECTS AND METHODS We retrospectively analyzed clinical presentation, imaging appearances and outcome of the 12 patients who were diagnosed as(More)
The aim of this study was to examine the usage parameters of diagnostic computed tomography (CT) in children because of concerns of possible overuse in Japanese hospitals, including the “technical” CT exposure settings and the “clinical” grounds for CT requests. We examined the methodology at the radiology department to reduce radiation exposure to children(More)
The use of Positron Emission Tomography (PET) or PET/CT for voluntary cancer screening of asymptomatic individuals is becoming common in Japan, though the utility of such screening is still controversial. This study estimated the general test validity and effective radiation dose for PET/CT cancer screening of healthy Japanese people by evaluating four(More)
OBJECTIVES We quantified the rCBF and regional vascular reserve (CVR) in adult patients with moyamoya disease before and after surgery using IMP I 123 SPECT. METHODS The patient population included 5 adult patients with ages at presentation ranging between 23 and 42 years. One patient had stroke, whereas 4 patients had transient ischemic attacks. (More)
Early prediction of therapeutic outcome is important in determining whether the ongoing therapy is beneficial. In addition to anatomical response determined using the Response Evaluation Criteria in Solid Tumors (RECIST) criteria, recent studies have indicated that change in tumor glucose use on or after treatment correlates with histopathologic tumor(More)
BACKGROUND Leptomeningeal high signal intensity (ivy sign) on fluid-attenuated inversion-recovery (FLAIR) MR imaging is one of the features of Moyamoya disease. However, the correlation between ivy sign and cerebral perfusion status has not been fully evaluated. PURPOSE To characterize ivy sign on FLAIR images in Moyamoya disease and compare this finding(More)
OBJECTIVE To report 2 cases of patients with Down syndrome and severe cognitive impairment who gained dramatic improvements in quality of life (QOL) upon donepezil treatment. CASE SUMMARIES Case 1. A 38-year-old woman with Down syndrome, diagnosed with secondary progressive dementia when her mental state had deteriorated rapidly after graduation from(More)
Early detection of a response to neoadjuvant chemotherapy for locally advanced rectal cancer may spare patients from additional toxic but ineffective chemotherapy. Using 18F-fluorodeoxyglucose positron emission tomography (18F-FDG PET), we evaluated tumor response prospectively in the early course of preoperative chemotherapy. The subjects were 15 patients(More)