Acoustic properties of normal and cancerous human liver—II Dependence on tissue structure

摘要: Abstract Ultrasonic speed, attenuation and backscattering were measured as a function of frequency compared with measurements water content, fat content collagen in specimens excised human liver. It is observed that the ultrasonic velocity decreases both increasing contents, although appears to have overriding influence. An increase correlates well decreasing coefficients (and slope their dependence), but positive dependences are found between these acoustic characteristics content. believed on secondary importance those possibly arise result an inverse relationship For liver specimens, correlations, barely significant, for only after data had first been corrected variations while no significant dependence was seen.