ULTRASONIC DIAGNOSTIC APPARATUS AND METHOD FOR CONTROLLING ULTRASONIC DIAGNOSTIC APPARATUS

摘要

An ultrasonic diagnostic apparatus comprises a transmission section (14) for driving an ultrasonic probe (13) used for transmitting an ultrasonic transmission wave toward a body tissue of an organism, a reception section (15) for receiving an ultrasonic reflected wave produced when the ultrasonic transmission wave is reflected at the body tissue by means of the ultrasonic probe, a phase detecting section (16) for phase-detecting the ultrasonic reflected wave, and a calculating section (19) for calculating the position displacements of positions to be measured of the organism tissue from the signal generated by the phase detection and the maximum thickness variation and/or elastic characteristic between two points selected from the positions to be measured from the position displacements. The calculating section (19) calculates the maximum and minimum values of the thickness or thickness variation between two points from the position displacements of the two points determined for a partial period of one heart cycle and calculates the maximum thickness variation and/or elastic characteristic from the difference between the maximum and minimum values.