The detection performance expected of the abnormal shadow candidate detection device is maintained by immediately feeding back the evaluation result of the detection performance of the abnormal shadow candidate detection device to the development side. According to the control unit 41 of the image display device 4, when the interpretation result information including the position of the area determined by the interpretation doctor as the lesion area is input from the operation unit 42, the interpretation result information is transmitted to the image server 3, and the interpretation is performed. Based on the result information and the CAD information detected by the abnormal shadow candidate detection device 2, the image server 3 is caused to calculate an index value indicating the detection performance of the abnormal shadow candidate in the abnormal shadow candidate detection device 2. Then, it is determined whether or not the calculated index value satisfies a predetermined reference value, and when it is determined that the calculated reference value does not satisfy the predetermined reference value, warning information about the detection performance of the abnormal shadow candidate detection device 2 Is output by the communication unit 44 or the display unit 43.異常陰影候補検出装置の検出性能の評価結果を即時に開発側にフィードバックすることにより異常陰影候補検出装置に期待される検出性能の維持を図る。画像表示装置４の制御部４１によれば、操作部４２から読影医が病巣領域と判定した領域の位置を含む読影結果情報が入力されると、読影結果情報を画像サーバ３に送信し、読影結果情報及び異常陰影候補検出装置２により検出されたＣＡＤ情報に基づいて異常陰影候補検出装置２における異常陰影候補の検出性能を示す指標値を画像サーバ３に算出させる。そして、算出された指標値が予め定められた基準値を満たすか否かを判断し、定められた基準値を満たさないと判断した場合に、異常陰影候補検出装置２の検出性能についての警告情報を通信部４４によりまたは表示部４３により出力させる。
