the results show that normal attenuation values for human liver are 0.054 +/- 0.009 np/cm-mhz ( 0.47 db/cm-mhz ) with a frequency dependence of fn , where n = 1.05 +/- 0.25 , in agreement with in vitro studies of mammalian liver .
C0086418
human
C1706141
np