Jpn. J. Appl. Phys. 24 (1985) Supplement 24-1 pp. 84-86 |Previous Article| |Next Article| |Table of Contents|
|Full Text PDF (490K)| |Buy This Article|
5th Symp. Ultrasonic Electronics, Tokyo, 1984
An In Vivo Technique for Estimation of Size and Relative Sound Velocity of Breast Tumor using Distorted Image in Ultrasonic Tomogram
Research Laboratory of Precision Machinery and Electronics, Tokyo Institute of Technology, Nagatsuta, Midori-ku, Yokohama.
(Received November 31, 1985)
A technique is proposed for estimation of size and sound velocity of a massive tissue relative to its surroundings that is larger with ultrasonic beam width. This technique is based on a distorted image of a plane reflector behind a massive tissue in an ultrasonic tomogram, which is caused by ultrasonic refraction. An example of a breast tumor with an obscure boundary is shown to demonstrate the usefulness of this technique.