Related Experiment Video
Updated: Feb 6, 2026

Shunt Surgery, Right Heart Catheterization, and Vascular Morphometry in a Rat Model for Flow-induced Pulmonary Arterial Hypertension
Published on: February 11, 2017
Venographic Analysis of Portal Flow After TIPS Predicts Future Shunt Revision
Aichi Chien1, Yun-Lia Wang1, Justin McWilliams1
11 Department of Radiology, David Geffen School of Medicine at UCLA, 10833 LeConte Ave, Box 951350, Los Angeles, CA 90095-1721.
Objective:
The purpose of this study was to investigate a new method-the portal vein enhancement curve-for quantifying portal vein blood flow immediately at transjugular intrahepatic portosystemic shunt (TIPS) creation using digital subtraction angiography images and its potential usefulness as a predictor of TIPS revision.
Conclusion:
The portal vein flow time constant, Qτ, was significantly different (p = 0.002) between patients grouped by 12-month revision (TIPS angioplasty, TIPS reduction, no revision); Qτ was higher in patients who required TIPS reduction.
More Related Videos
16:19Heterotopic Auxiliary Rat Liver Transplantation With Flow-regulated Portal Vein Arterialization in Acute Hepatic Failure
Published on: September 13, 2014
12:27Technique of Porcine Liver Procurement and Orthotopic Transplantation using an Active Porto-Caval Shunt
Published on: May 7, 2015
Related Concept Videos
Shunt Admittances
To model this effect, the method of images is employed. This method involves replacing the Earth with an image conductor that mirrors the original...
Hepatic Portal System
At its core, the hepatic portal vein is the result of a confluence of the superior and inferior mesenteric veins along with the splenic vein. Each of these veins has a unique role. The superior mesenteric vein is...
Predicting Molecular Geometry
Prediction Intervals
However, the point estimate is most likely not the exact value of the population parameter, but close to it. After calculating point estimates, we construct interval estimates, called confidence intervals or prediction intervals. This prediction interval comprises a range of values unlike the point estimate and is a better predictor of the observed sample value, y.
End Point Prediction: Gran Plot
For potentiometric titration, the Gran plot is created by plotting...
Sensitivity, Specificity, and Predicted Value
Sensitivity is the...