Method of measuring the thickness of the ultrasonic diagnostic apparatus and the intima-media .

摘要

In the detection of the outer membrane and the inner boundary boundaries in measuring the thickness of the intima-media, to provide a boundary detection method that does not depend on the magnitude relation of the echo intensity change of the outer membrane side and the luminal side. Sends to the subject an ultrasound, the ultrasound diagnostic device acquires the biometric information based on the echo signal from the subject received. The ultrasonic diagnostic apparatus, based on the template that represents the intensity distribution generator for generating an echo intensity distribution in the depth direction on the blood vessel wall from the echo signal, is prepared in advance, the reference pattern of the echo intensity distribution, is used for edge detection A pattern similarity calculation unit calculating a template generator for generating the template, the similarity of the intensity distribution and the template pattern to be and is varied in the depth direction of the template, corresponding to the intima-media thickness of the template boundary determining it based on the pattern similarity calculating section for changing the to calculate the similarity of the intensity distribution templates each change, the degree of similarity calculated for each change, the inner boundaries and determining the adventitia boundary I and a part.