This technique can be performed to assess peak velocity across a valve or regurgitant
fraction using "through plane" phase contrast cine imaging.
Magnetic resonance imaging (MRI) demonstrates superior performance in volumetric calculations, 3D anatomy, wall characteristics and quantification of mass of ventricles and atria, shunts and shunt fractions, and regurgitant
fractions of valvular incompetence and myocardial deformation measures.
Transtricuspid pressure gradient can be determined from the peak velocity of the tricuspid valve regurgitant
jet, and right atrial (RA) pressure was estimated from IVC diameter and its collapse during inspiration under the long-axis subcostal view.
The mechanism because of which the valve was regurgitant
was not only the dilation of the aorta but also, and probably most importantly, the retraction of the tissue of the leaflets which was responsible for the recurrence of the aortic insufficiency.
All the four valves were pulsed to evaluate for stenotic and regurgitant
The RVSP was obtained by measuring the tricuspid regurgitant
jet velocity via a pulsed Doppler study of the tricuspid valve.
Multiplanar cardiac MRI plays an important role in the SOV aneurysm assessment due to its lack of ionizing radiation, ability to quantify ventricular functions and aortic regurgitant
fraction, better temporal resolution, and assessment of wall motion abnormalities.
The most common lesions seen in RHD in this study were of regurgitant
type predominantly involving MV followed by tricuspid and AVs.
BAVs have more aortic root dilatation due to higher stroke volumes.
In a systematic manner, we assessed the mitral annulus, leaflet thickness and mobility, commissural and chordal fusion, the presence and location of calcific nodules, areas of prolapse and billowing, the direction of the regurgitant
jet, thickness and length of chordae tendineae and MR grade.
Transesophageal echocardiogram revealed severe aortic regurgitation; pressure half-time of the regurgitant
jet was 320 ms.
Sachdev et al., "Quantification of aortic regurgitation by real-time 3-dimensional echocardiography in a chronic animal model: computation of aortic regurgitant
volume as the difference between left and right ventricular stroke volumes," Journal of the American Society of Echocardiography, vol.