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A Study of Characteristics of X-ray Generators and Exposure Dose

By 安部 真治, 根岸 徹, 小倉 泉, 加藤 洋, 青柳 泰司, 中谷 儀一郎 and 熊谷 曜子

Abstract

現在,診断用X線装置は単相装置,三相装置,コンデンサ式装置,インバータ式装置などが普及している。今回,これらの装置の高電圧測定,線量測定,波形解析を行い,百分率平均誤差,再現性,X線出力,写真効果,被曝線量などについて検討した。インバータ式装置の特性は優れているが,単相装置とコンデンサ式装置はX線出力と被曝線量の点で問題がある。X線装置の高電圧波形は矩形波に近いものが望ましく,X線撮影にはこれらの装置の特性を十分認識する必要がある。Up to now in Japan, shingle phase, three phase, capacitor discharge type and inverter type X-ray generators have mainly been used in the diagnostic X-ray generator.In this study, the authors investigated the characteristics of these generators. Their percentage of ripple, percent average error (PAE), reproducibilities, X-ray output, photographic effect and exposure does were examined and a waveform analysis was performed.As a result, single phase and capacitor discharge type X-ray generators presented some problems as to X-ray output and exposure dose. The characteristics of the inverter type X-ray generator were excellent. It is desirable that high voltage waveforms of X-ray generators should be rectangular waveforms. We have to recognize the characteristics of these generators in radiography

Topics: X線装置, 特性解析, X線出力, 写真効果, 被曝線量, X-ray generator, Analysis of Characteristics, X-ray output, Photographic effect, Exposure dose
Publisher: 東京都立医療技術短期大学紀要委員会
Year: 1996
OAI identifier: oai:tokyo-metro-u.repo.nii.ac.jp:00004080
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