Shimpei Kawaguchi

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OBJECTIVE To reveal morphological differences between extranodal non-Hodgkin's lymphoma (NHL) and squamous cell carcinoma of the naso- and oropharynx, and to evaluate the usefulness of diffusion-weighted (DW) and (18)F-fluorodeoxyglucose PET/CT imaging. METHODS Imaging findings, signal intensities, apparent diffusion coefficients (ADCs), and maximum(More)
This study aimed to assess the efficacy of a multimodality imaging approach for differentiating between primary extranodal non-Hodgkin's lymphoma (NHL) and squamous cell carcinoma (SCC) of the maxillary sinus. Twelve NHLs and 29 SCCs of the maxillary sinus were included. CT findings, MR signal intensities, apparent diffusion coefficients (ADCs), and maximum(More)
OBJECTIVE The purpose of this study was to determine whether adenoid cystic carcinomas (ACCs) of the maxillary sinus have features on CT and MR imaging. MATERIALS AND METHODS Nine patients with histopathologically proved maxillary sinus ACCs were included. The growth pattern was classified as expansile or destructive types on the basis of CT images. CT(More)
Background: Endotracheal/endobronchial metastases (EEMs) from nonpulmonary neoplasms are rare. However, their definition and developmental modes have not yet been fully elucidated. Methods: EEMs were defined as documented nonpulmonary neoplasms metastatic to the subseg-mental or more proximal central bronchus, in a bronchoscopically visible range. The(More)
BACKGROUND The usefulness of T2*-weighted (T2*W) imaging for the detection of adnexal torsion has yet to be determined. PURPOSE To assess the usefulness of T2*W imaging for detecting and differentiating adnexal torsion. MATERIAL AND METHODS Eight patients with eight ovaries with torsion and 44 patients with 72 ovaries without torsion were included in(More)
To evaluate the value of adding single-shot balanced turbo field-echo (b-TFE) sequence to conventional magnetic resonance cholangiopancreatography (MRCP) for the detection of common bile duct (CBD) stone. One hundred thirty-seven consecutive patients with suspected CBD stone underwent MRCP including single-shot b-TFE sequence. Twenty-five patients were(More)
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