| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an ultrasonograph capable of measuring precise and reliable IMT (Intima-Media thickness) values of the anterior wall and the posterior wall of the blood vessel by ultrasonic waves without bothering an operator. <P>SOLUTION: This ultrasonograph is provided with: a receiving section 2 receiving ultrasonic echo signals reflected by the blood vessel; a boundary position detecting section 8 detecting the boundary position between the blood flow area and the tunica intima, and the boundary position between the tunica media and the tunica externa of the anterior wall and the posterior wall of the blood vessel respectively; an IMT value calculation section calculating the IMT values of the anterior wall and the posterior wall of the blood vessel from the boundary position detected in the boundary position detecting section 8; and a reliability determination section 12 determining the reliability of the detected boundary position based on the feature quantity of the long shaft direction of the blood vessel of the boundary position. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
