PROBLEM TO BE SOLVED: To achieve reduction of risk of a side effect by a contrast medium and exposure dose reduction allowing optimum CT photography under the condition that an injection amount of the contrast medium is suppressed to the minimum.SOLUTION: This device making photographing timing proper includes: a measurement means 12 taking out potential from electrodes 11-3, 11-4 stuck to a measurement portion at which the contrast medium arrives after a portion of a living body injected with the contrast medium to be used for CT examination a current application means 11 applying a current to the living body near the electrodes an impedance monitoring means 21 monitoring aging effect of an impedance in the measurement portion based on the potential and the current obtained by the measurement means 12 and a notification control means 22 notifying photographing timing information based on the monitoring result by the impedance monitoring means 21.COPYRIGHT: (C)2012,JPO&INPIT【課題】造影剤の注入量を最小限に抑えた条件下で最適なCT撮影を可能とし、造影剤による副作用のリスクの低減と被曝量減少を実現する。【解決手段】CT検査に用いる造影剤を注入する生体の部位より遅延して前記造影剤が到達する測定部位に貼着された電極11-3,11-4から電位を取り出す測定手段12と、前記電極の近傍において生体に電流を印加する電流印加手段11と、前記測定手段12により得られる電位と前記電流とに基づき測定部位におけるインピーダンスの経時変化を監視するインピーダンス監視手段21と、前記インピーダンス監視手段21による監視結果に基づき、撮影タイミング情報を報知する報知制御手段22とを具備する。【選択図】図1
