3D Sonographic Measurement of Volumetric Flow in Transjugular Intrahepatic Porto-Systemic Shunts

Subjects who have a TIPS (transjugular intrahepatic portal-systemic shunt) for portal hypertension will undergo a clinical 3D ultrasound to determine if the TIPS is working properly. Additional ultrasounds will be obtained during the subject's clinically ordered ultrasound(s). These measurements will be taken by using a second ultrasound probe (plastic hand held device that is rubbed along the subject's abdomen). 15 minutes will be added to your clinically ordered exams that are completed 4 times a year.