PROBLEM TO BE SOLVED: To provide a medical image diagnostic apparatus which notifies the operator of a possibility of the subject being changed and reduces the possibility of the operator forgetting to input subject information and a mismatch being caused between the image data and the subject information.SOLUTION: A medical image diagnostic apparatus according to the present invention comprises: an imaging device for capturing an image of a subject input means for inputting subject information which is information of the subject detection means for detecting a possibility of the subject being changed based on a state of the imaging device and notification means which, when the detection means detects the possibility of the subject being changed, notifies the operator of the possibility of the subject being changed.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2018,JPO&INPIT【課題】 操作者に被検体の入れ替えがあった可能性を通知し、操作者が被検体情報の入力操作を忘れ、画像データと実際の被検体情報に不整合が発生する可能性を低減させる医用画像診断装置を提供する。【解決手段】 本発明に係る医用画像診断装置は、被検体を撮影する撮影装置と、前記被検体の情報である被検体情報を入力する入力手段と、前記撮影装置の状態に基づいて前記被検体の入れ替えの可能性を検出する検出手段と、前記検出手段が前記被検体の入れ替えの可能性を検出した場合に当該被検体の入れ替えの可能性の通知を操作者に通知する通知手段と、を備えることを特徴とする。【選択図】 図8