METHOD FOR MEASURING ULTRASONIC SOUND ABSORPTION OR SOUND ATTENUATION AMOUNT

摘要

PROBLEM TO BE SOLVED: To obtain a different variable for a solution to an absorption amount or an attenuation amount, without consideration for unknown tissue rigidity.SOLUTION: In the present invention, an ultrasonic absorption or attenuation amount is measured (38). Tissue displacement caused by oppression of various frequencies is measured to estimate a sound absorption amount or a sound attenuation amount (28). The absorption amount or the attenuation amount is calculated from the tissue displacement (38).