Calculating the finite difference of integral calculus quantity which integrates the ultrasonic traveling direction component and the traveling direction component for remedy of portable quantity of section where the plural transducer elements were arranged, focused irradiated the ultra wave to the suffering inspection body, had the ultrasonic probe 1 which, detects that reflected wave being the ultrasonic diagnostic device which the coaxial tomography of the aforementioned suffering inspection body image pickup is done making use of the reflected wave, system expansion sensing station 22, the cubical expansion which from the coaxial tomography is formed to the portion of the suffering inspection body, pattern matching the coaxial tomography which image pickup it does with the frame which differs, were calculated, the ultrasonic diagnostic device which it extracts.複数のトランスデューサ素子が配列され、被検体に超音波を収束照射し、その反射波を検出する超音波探触子1を備え、反射波を用いて前記被検体の断層像を撮像する超音波診断装置であって、体制膨張検出部22が、断層像から被検体の一部に生成された体積膨張を、異なるフレームで撮像した断層像をパターンマッチングして算出された各部の移動量の治療用超音波の進行方向成分と、進行方向成分を積分した積分量との差分を演算して抽出する超音波診断装置。
