Reconstruction of 3-dimensional right ventricular shape and volume from 3 orthogonal planes.
This study validates a reconstructive technique that describes 3-dimensional right ventricular (RV) shape and volume with the use of 3 standard echocardiographic planes. The volume of 24 cast models of lamb right ventricles (12 normal, 12 hypertensive) was determined by water displacement. Reconstruction of the cast shapes was calculated from 2 sets of digitized data: cast cross-sectional digitized tracings and echocardiographic cross-sectional tracings. Regional volume ratios from both data sets were assessed to quantitatively specify RV regional volume differences between normotensive and hypertensive right ventricles. This method described the 3-dimensional RV shape with no differences between reconstructed volumes and true volumes for either normotensive or hypertensive casts. Between hypertensive and normal groups, regional volume ratios yielded a difference in free wall ratios that was observed to be greater in the hypertensive cast group (P =.007).
Munoz
R
R
Department of Cardiology, Children's Hospital, Boston, Mass, USA. munoz_r@a1.tch.harvard.edu
Marcus
E
E
Palacio
G
G
Gauvreau
K
K
Wessel
D L
DL
Colan
S D
SD
D000818:Animals; D016319:Corrosion Casting; D004195:Disease Models, Animal; D019560:Echocardiography, Three-Dimensional / Q000379:methods*; D006352:Heart Ventricles / Q000000981:diagnostic imaging*; D006973:Hypertension / Q000150:complications; D017380:Hypertrophy, Right Ventricular / Q000000981:diagnostic imaging / Q000209:etiology; D007091:Image Processing, Computer-Assisted; D066298:In Vitro Techniques; D015588:Observer Variation; D012756:Sheep; D012826:Silicone Elastomers
D012826:Silicone Elastomers