Liver Fibrosis Evaluation Using Ultrasound Shear Wave Imaging

Multiple miniature mechanical vibrators will be placed on the body surface of rib cage of the subject or introduced through an audio loudspeaker in contact with the subject's upper torso or through miniature vibrator attached to the ultrasound probe. Repeated ultrasound stiffness measurements will be made at different locations within the liver parenchyma while the mini vibrators introduce shear wave in the liver, similar to an MRE examination.