The extraction expedient which extracts the blood vessel territory from the medical graphics data and, The detection expedient which does the appraisal regarding the information of form or signal value distribution, concerning the blood vessel side edge which includes with around the blood vessel contour point and the blood vessel contour point of the blood vessel territory which is extracted by the aforementioned extraction expedient, detects the abnormal section on the basis of the appraisal result and, The indicatory expedient which indicates information concerning the abnormal section which is detected by the aforementioned detection expedient and, it has.医用画像データから血管領域を抽出する抽出手段と、前記抽出手段により抽出された血管領域の血管輪郭点と血管輪郭点周辺とを含む血管辺縁部について、形状または信号値分布情報に関する評価を行い、評価結果に基づいて異常部を検出する検出手段と、前記検出手段によって検出された異常部についての情報を表示する表示手段と、を備える。
