Patent ID: 8469889
Filing Date: 2013-06-25
Classification: A61B

Abstract:
1. An ultrasonic diagnostic apparatus comprising: a transmitting section configured to drive a probe so that the probe sends out ultrasonic waves toward a subject one after another; a receiving section configured to get an echo, which has been produced as a result of reflection of each said ultrasonic wave from the subject, received by the probe, thereby generating a received signal; a tissue tracking section configured to generate position tracking waveforms, each of which represents the positional displacement of an associated one of first measuring points that have been set on the subject, based on the received signals; a boundary detecting section configured to determine the boundary location of the subject's tissue; a tracking waveform choosing section configured to choose at least two position tracking waveforms corresponding to at least two second measuring points selected from among the first measuring points, the at least two second measuring points including one of the first measuring points which is located on the boundary location determined by the boundary detecting section, and at least one other of the first measuring points; wherein the second measuring point that is the at least one other of the first measuring points differs from the first measuring point located on the boundary location, and differs from first measuring points for which the amplitude of the received signal and/or the position tracking waveform satisfies a predetermined condition; and a tissue attribute value calculating section configured to calculate a tissue attribute value of the subject between the at least two second measuring points using the position tracking waveforms that are associated with the at least two second measuring points.