Hidetaka Katayama

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We used the fast field-echo technique of magnetic resonance (MR) imaging with an intravenous bolus injection of paramagnetic contrast agent to evaluate glomerular function. The time-dependent curves of changes in signal intensity observed in the renal cortex and renal medulla brought about by the paramagnetic contrast agent allowed insight into excretory(More)
Nifedipine is a new agent belonging to the calcium antagonist group of drugs, applied clinically to circulatory disorders, such as essential hypertension, renal hypertension and angina cordis and has been rapid in gaining popularity in Japan. On the other hand, as do all effective drugs, this drug has side effects, one of which is gingival hyperplasia. The(More)
This study was undertaken to evaluate the changes in the radiopacity and mechanics of polymethylmethacrylate (PMMA) bone cement with the addition of barium. Barium sulfate powder was added to a PMMA bone cement with an initial 10% barium concentration. The changes in radiopacity and strength were evaluated by testing cement blocks containing four barium(More)
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