Waveform tracking apparatus, ultrasonic diagnostic apparatus, and waveform tracking method

摘要

A waveform tracking device capable of reliably setting an accurate tracking start point is provided. A bone strength diagnostic apparatus includes a vibrator, a determination index calculation unit, a tracking start point setting unit, and a tracking execution unit. A plurality of transducers 24 are arranged side by side to acquire an echo signal for the transmitted ultrasonic beam. The determination index calculation unit 37 calculates a determination index representing the certainty that the echo signal is a reflected wave on the surface of the cortical bone 10. The tracking start point setting unit 38 sets a tracking start point at the timing of a signal waveform corresponding to an echo signal that is received by one transducer 24 among the plurality of transducers 24 and whose determination index satisfies a predetermined condition. The tracking execution unit 39 sequentially sets the tracking points for the echo signals acquired from the other transducers 24, starting from the tracking start point. [Selection] Figure 1