MR imaging of an atypical vaginal leiomyoma.
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Adult↗
Biomedical subjects
Hitoshi Shibuya
Publications and source records attributed to Hitoshi Shibuya.
Maintained salivary function after brachytherapy in patients with head and neck carcinomas--evaluation using quantitative salivary gland scintigraphy.
The purpose of this study was to determine whether or not salivary gland dysfunction occurs within the first three months after brachytherapy in patients with head and neck carcinoma. Of the 20 patients with head and neck squamous cell carcinoma included in this study, 11 were treated with brachytherapy and the remaining 9 patients received external irradiation. All the patients underwent a salivary gland scintigraphy before and after radiotherapy. The scintigraphic parameters of each major salivary gland were then compared before and after the radiotherapy. In the brachytherapy group, none of the scintigraphic functional parameters showed a significant change before and after the radiotherapy. In contrast, all of the parameters with the exception of the uptake ratio (UR) of the submandibular glands significantly decreased after external irradiation. This observation was to be expected owing to the different irradiation doses administered by the two techniques. The scintigraphic technique used to evaluate salivary gland function should be used in future intensity-modulated radiation therapy salivary-gland-sparing studies in order to evaluate both the acute and chronic effects of irradiation in head and neck cancer patients.
Adult↗
Computed tomography features of portal hypertensive gastropathy.
OBJECTIVE: The aim of this study was to detect the computed tomography features in portal hypertensive gastropathy (PHG). METHODS: This study included 32 patients with portal hypertension. Ten of 32 patients were diagnosed with (PHG), and the other 22 patients were not diagnosed with PHG on the basis of upper endoscopic examination. Dynamic computed tomography studies were performed in all 32 patients. Each computed tomography scan was evaluated with regard to whether the gastric inner layer was enhanced or not. RESULTS: Nine patients with PHG had delayed enhancement on the inner layers of gastric walls, but in 17 of 22 patients without PHG, delayed enhancement was not observed. CONCLUSION: Enhancement on the inner layer of gastric walls may reflect gastric congestion. Portal hypertensive gastropathy should be suspected when this finding is detected on computed tomography scans in patients with portal hypertension.
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