2010 Volume 28 Issue 3 Pages 163-168
The ultrasonic diagnostic equipment is widely used in clinical field and the medical diagnosis using the ultrasonic B-mode image has made remarkable result. However, experience and skill of the doctor are required for the diagnosis using the ultrasonic image. Though it has been tried to obtain the quantitative diagnosis information using the acoustic characteristic of the tissue, useful information has not been obtained without sufficiently considering the inhomogeneous structure which is large features of the tissue. We have developed quantitative diagnostic technique which can be applied to the clinical field, while the relationship between tissue structure which is inhomogeneous medium for ultrasound and acoustic characteristic is systematically clarified. High precision measurement method of two-dimensional acoustic characteristic distribution for the tissue was developed, and the clear correlation between acoustic characteristic change by the lesion and physical change of the tissue was found. From the research result of acoustic characteristic, we proposed the model of the lesion. Quantitative evaluation method has been examined considering the inhomogeneous structure in the tissue using ultrasonic image, and the clinical evaluation is advanced.
