PROBLEM TO BE SOLVED: To realize a new technology of detecting the position of a blood vessel to be an object of ultrasonic measurement.SOLUTION: An ultrasonic measurement device evaluates the feature point combination consisting of four feature points in a B mode image acquired with ultrasonic measurement according to such a reference that the positions of two straight lines defined by the four feature points are regarded as the positions of the blood vessel walls of the longitudinal cross section. The evaluation items are the number of feature points located on each straight line, positional change in the feature points following the lapse of time, luminance of the feature points, the number of feature points between the straight lines and the like. The ultrasonic measurement device detects the blood vessel positions by determining that there are the positions of the blood vessel walls on the positions of the two straight lines when a prescribed condition is satisfied as a result of evaluation.COPYRIGHT: (C)2016,JPO&INPIT【課題】超音波測定の対象となる血管の位置を検出する新たな技術の実現。【解決手段】超音波測定によって取得したBモード画像中の4つの特徴点からなる特徴点組を、当該4つの特徴点で定められる2本の直線の位置が血管の長軸方向断面の血管壁の位置とみなせるかという基準で評価する。評価項目としては、各直線上に位置する特徴点の数や、時間経過に伴う特徴点の位置変化、特徴点の輝度、直線間の特徴点の数などがある。評価の結果、所定条件を満たした場合には、2本の直線の位置に血管壁の位置があると判断して血管位置を検出する。【選択図】図3
