翻訳と辞書 Words near each other ・ Automatic Data Processing ・ Automatic data processing ・ Automatic Deformation Monitoring System ・ Automatic dependent surveillance – broadcast ・ Automatic differentiation ・ Automatic Digital Computer M-1 ・ Automatic Digital Network ・ Automatic distillation of structure ・ Automatic document feeder ・ Automatic double tracking ・ Automatic Drive ・ Automatic Duck ・ Automatic Electric ・ Automatic enrolment ・ Automatic equipment identification ・ Automatic exposure control ・ Automatic faucet ・ Automatic film applicator ・ Automatic fire suppression ・ Automatic firearm ・ Automatic Flowers ・ Automatic for the People ・ Automatic frequency control ・ Automatic gain control ・ Automatic gas-check ・ Automatic Generation Control ・ Automatic Generic Substitution ・ Automatic grenade launcher ・ Automatic group ・ Automatic Gun-Laying Turret Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Automatic exposure control ： ウィキペディア英語版 Automatic exposure control Automatic Exposure Control (AEC) is an X-ray exposure termination device. A medical radiography x-ray exposure is always initiated by a human operator. X-ray termination is done by the same human operator or an exposure control device such as an electronic timer or an AEC device, whichever comes first. The intention of the AEC termination device is to provide consistent x-ray film appearance. ==Operation== An AEC system uses a physically thin radiation ionization detector "AEC detector" which is positioned between the patient being x-rayed and the x-ray film cassette. X-rays passing through the patient also pass through this "AEC detector" before they strike the x-ray film. A weak ionization signal from the AEC detector is integrated as a ramp shaped voltage waveform. This ramp signal rises until it matches a pre-set threshold. At this point the x-ray exposure is terminated. AEC devices are calibrated to ensure that similar exams have linearity in exam densities. This is due to the fact that a milliamperage station is no longer selected and instead relies upon the ionization within the selected chambers. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Automatic exposure control」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.