Acoustic Impedance of Tissue

Publisher Website
Google Scholar
Abstract
A technique is described for measuring directly the acoustic impedance of tissue, and experimental results are reported for normal and abnormal post-mortem mammalian tissue as well as various live tissue at 5 MHz. Except for bone and brain, most tissues studied had about the same acoustic impedance which remained reasonably constant throughout the volume of each sample and for various samples. Organ capsules, however, showed large variations with location on each sample. Interiors of cirrbotic livers showed a significant lowering of the impedance while no significant differences were found for metastatic tumors of both liver and brain. Live tissues showed an impedance higher than postmortem samples, which is felt to be due to the presence of both blood and blood pressure. Temperature changes showed little effect.

This publication has 0 references indexed in Scilit: