| 摘要 |
The present invention is to provide an ultrasonograph which can accurately measure an IMT value of a blood vessel by using an ultrasonic wave. The ultrasonograph includes an ultrasonic signal emitting unit (1) for emitting an ultrasonic signal, an ultrasonic echo receiving unit (2) for receiving, as a reflected signal, an ultrasonic echo from inside tissue, and converting the ultrasonic echo into an electronic signal, an amplitude information processing unit (5) for processing amplitude information on the ultrasonic echo, a phase information processing unit (6) for processing phase information of the ultrasonic echo, and a boundary detecting unit (7) for determining a distribution of a boundary between a blood flow region and an intima and a boundary between a media and an adventitia on the basis of at least one processing result output from the amplitude information processing unit and at least one processing result output from the phase information processing unit, and an IMT value calculating unit (9) for computing an IMT value of a blood vessel from position information indicative of the position of the boundary between the blood flow region and the intima and position information indicative of the position of the boundary between the media and the adventitia.
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