This technique can be performed to assess peak velocity across a valve or regurgitant fraction using "through plane" phase contrast cine imaging.
VEPC cine imaging can be performed to assess peak velocity and regurgitant fraction. (25) The Navigator sequence may be used to assess anatomy and origin of the coronary arteries.
Surgical treatment is reserved for patients with a regurgitant fraction
The severity of mitral regurgitation (MR) is assessed visually and by regurgitant jet/LA ratio, vena contracta, proximal isovelocity surface area (PISA) radius, regurgitant fraction
, regurgitant orifice area, and regurgitant volume measurements.
Patients with moderate (mitral regurgitant fraction
30-49%) and severe MR (mitral regurgitant fraction
[greater than or equal to] 50%), consistent with the recommendations of American Society of Echocardiography, were included in the study (23).
There are several studies comparing Doppler echocardiography and radionuclide assays with cardiac magnetic resonance imaging in the assessment of regurgitant fraction (9); however, there is no study that compares cardiac angiography and cardiac magnetic resonance imaging (CMR) in determining the amount of pulmonary regurgitation.
The mean pulmonary regurgitant fraction was31 [+ or -] 21% (range 0-70; median 30%).
There was significant correlation between pulmonary regurgitant fraction (PRF) obtained by CMR and pulmonary insufficiency measured by angiocardiogram (r=0.414, p<0.001,).
Experimentally, close correlations were found between EBCT and EFP measurements of regurgitant volumes and regurgitant fractions