Panasonic Corporation

Yoshinao Tan-naka

Takao Suzuki

Makoto Kato

Hisashi Hagiwara

Yoshinobu Watanabe

An ultrasonic diagnostic apparatus according to the present invention includes: a transmitting section for driving an ultrasonic probe to transmit an ultrasonic wave toward a measuring region of a subject, including an arterial vascular wall; a receiving section for receiving a reflected wave, produced by getting the ultrasonic wave reflected from the subject, at the probe, thereby generating a received signal; a displacement detecting section for calculating the magnitude of displacement of each measuring point in the measuring region on the wall by analyzing the received signal; a tissue-to-present determining section, which defines at least one boundary between tissues included in the measuring region on the wall and which selects one of at least two areas divided by the boundary defined; and a property value calculating section for calculating a property value of the subject based on the magnitude of displacement of each measuring point. The distribution of property values of the measuring points in the area selected by the tissue-to-present determining section is presented as a two-dimensional image.

Ultrasonograph

The present invention aims at providing an ultrasonic diagnostic apparatus capable of displaying a stable spatial distribution of elastic characteristics for each heart beat without depending on the measurement of blood pressure and the accuracy or stability of such measurement, where an ultrasonic wave transmitted from an ultrasonic probeand reflected by biomedical tissue is input to a computing sectionby way of a receiving sectiona delay time control section, phase detection sectionand filter section. In accordance with the phase detection signal acquired from the phase detection sectionthe computing sectioncomputes a relative elastic characteristic which is an elastic characteristic normalized by an elastic characteristic of an arbitrary reference area in the biomedical tissue. A distribution of relative elastic characteristics computed by the computing section is displayed on a display section

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Kanagawa, Japan

Yoshinao Tan-naka