Measurement of right ventricular volume from biplane contrast ventriculograms: Validation by cast and three‐dimensional echo

Abstract

We compared six models for measuring right ventricular (RV) volume from biplane ventriculograms in the 30 degrees right anterior oblique and 60 degrees left anterior oblique projections in adult and dilated RVs. We used 27 casts of normal RVs plus 37 three-dimensional (3D) echocardiographic RV reconstructions that we rotated to the oblique projections for contour extraction. Biplane volumes were computed using published formulas. RV volumes ranged from 18.9 to 322.4 ml. Both sets of volumes correlated similarly to true volume and were combined. Simpson's method with 50 slices yielded the lowest absolute error (19.5 +/- 28.9 ml); Simpson's with 20 slices yielded the lowest bias (1.3 +/- 35.7 ml). The prism and area-length models performed within this range. The Simpson's method provides the most accurate measurement of RV volume from biplane contrast ventriculograms recorded in oblique projections. Volume validation can be performed using 3D echo data.

Left and right ventricular speckle tracking study before and after percutaneous atrial septal defect closure in children

“…Transcatheter occlusion of ASD secundum is performed worldwide and has become one of the most practiced interventional procedures for structural heart disease, and closure of the defect causes a sudden change in loading conditions of both ventricles [ 2 ]. Quantitative evaluation of right ventricular (RV) function remains challenging due to RV complex anatomy and structure [ 3 ]. The 4D echocardiography can overcome 2D limitations by neglecting geometric assumptions and using multiple images to reconstruct the RV chamber [ 4 ].…”

Assessment of right ventricular function by real-time three-dimensional echocardiography improves accuracy and decreases interobserver variability compared with conventional two-dimensional views

“…Because the ventricle has dense trabeculations, complex geometric structure, and physiology, reliable assessment of RV function is difficult. Most methods require the measurement of RV dimensions, but conventional imaging methods such as angiography 19,20 and radionuclide methods 21 are of limited use because of the RV's position in the thorax. Recently, magnetic resonance imaging (MRI) has been validated as an accurate technique for determining RV volumes in vivo.…”

Right Ventricular Plasticity and Functional Imaging

“…Using contrast angiography and different derivations of the area‐length method, the RV has been modeled as a parallelepiped, ellipsoid of revolution, triangular prism, and pyramid, all of which are less accurate than modern methods using cardiac magnetic resonance imaging (CMR) or three‐dimensional echocardiography (3DE). [ 7 , 8 ]…”