Adjusting to the patient, it revises the internal organs positions of the dissection model, it navigates the scan of the probe in high accuracy making use of the dissection model which is revised. From position and the angle to which the ultrasonic diagnostic device control section the position detection expedient 14 which detects the position and angle of 12 and probe 10 and has the dissection model memory expedient 15, and the like which remembers the dissection model which includes the internal organs of the organism as for control section 12, detects with position detection expedient 14, adjusting to the patient, magnification ratio the navigation processing expedient the picture extraction expedient 121 which extracts the plural pictures every of specified section with the angle where is identical with the angle of 120 which with the ultrasonic coaxial tomography indicates the image pickup aspect and the cut surface on the dissection model which is revised and the aforementioned image pickup aspect and, the plural pictures which are extracted particularlyWith collating the aforementioned ultrasonic coaxial tomography, the aforementioned ultrasonic coaxial tomography most you acquire the picture which closely resembles, you have with the model position revision expedient 122 which revises the position of the dissection model on the basis of the finite difference of position of the image pickup aspect and position of the picture which is extracted particularly.患者に合わせて解剖モデルの臓器位置の補正をし、補正した解剖モデルを用いて探触子の走査を高精度にナビゲートする。超音波診断装置は、制御部12と、探触子10の位置と角度を検出する位置検出手段14と、生体の臓器を含む解剖モデルを記憶する解剖モデル記憶手段15等を備え、制御部12は、位置検出手段14で検出した位置と角度から、患者に合わせて倍率補正された解剖モデル上の撮像面及び切断面を超音波断層像と共に表示するナビゲーション処理手段120と、前記撮像面の角度と同一の角度での所定区間毎の複数画像を抽出する画像抽出手段121と、当該抽出された複数画像と前記超音波断層像を照合して、前記超音波断層像と最も近似する画像を取得し、撮像面の位置と当該抽出された画像の位置との差分を基に、解剖モデルの位置を補正するモデル位置補正手段122とを備える。
