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

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

To determine if ultrasound measurements can accurately measure the blood pressure of flow across a stent that has been placed in a portal vein to reduce portal vein pressure known as Transjugular Intrahepatic Porto-Systemic shunts or TIPS.

To determine if 3D ultrasound measurements can accurately measure the pressure of blood flow across a stent that has been placed in a portal vein. This has been done in order to reduce portal vein pressure. These shunts are known as Transjugular Intrahepatic Porto-Systemic shunts or TIPS.

Inclusion Criteria:

1. Male and female 18 years of age and older
2. Have an existing TIPS (Transjugular intrahepatic porto-systemic shunt)
3. Have an ultrasound ordered by your physician to evaluate your TIPS.
4. Able to read, understand and sign informed consent

Exclusion Criteria:

1. Under 18 years of age
2. Cannot be pregnant