초음파 전달함수의 위상보정을 위한 연구

A Study on the Phase Correction of ultratrasound transfer function

To characterize the bioloical tissues, the new methods to measure the frequency dependent attenuation are presented in this paper. In general, ultrasonic phase information was assumed by linear function of the frequency. But the minimum phase function which characterizes the frequency dispersion of tissue was derived in (2). It is very significant to measure the attenuation by using the minimum phase function to characterize the frequence dispersion of tissue. Also, we propose the phase correcting technique to take advantage of the idea that the distortion of amplitude component when the wave propagates through media.