Determination of Aortic Valve Area:A Simplification of the Method of Gorlin and Gorlin

Non-invasive and invasive evaluation of aortic valve area in 100 patients with severe aortic valve stenosis: Comparison of cardiac computed tomography with ECHO (transesophageal/transthoracic) and catheter examination

“…There is currently a controversial discussion between accuracy of TTE-based equation or invasive catheter-based calculation of the AVA [30]. Overall, there seems to be a good correlation between the two methods with regard to the blood flow relations through the valve [22,23] and the left ventricular function [19,31].…”

“…The invasive catheter-based evaluation using Fick/Gorlin equation [24,30] has been the gold standard in interventional cardiologists' hands especially in order to preoperatively evaluate the status of the coronary arteries. However, many limitations result in incorrect evaluation of the stenosis severity: i.e.…”