Left ventricular mass and volume: fast calculation with guide-point modeling on MR images.
The authors describe a fast method for calculating left ventricle (LV) mass and volumes from multiplanar magnetic resonance (MR) images. Mathematic models were fitted to a small number of user-selected guide points in 15 healthy volunteers, 13 patients after myocardial infarction, and a canine model of mitral regurgitation in eight dogs. Errors between model and manual contours were small (LV mass, 1.8 g +/- 4.9 [mean +/- SD]; end-diastolic volume, 2.2 mL +/- 4.6; end-systolic volume, 2.3 mL +/- 3.8). Estimates of global function could be obtained in 6 minutes, a time saving of 5-10 times over estimates with manual contouring.
Young
A A
AA
Departments of Anatomy with Radiology, University of Auckland, 85 Park Road, Auckland, New Zealand. a.young@auckland.ac.nz
Cowan
B R
BR
Thrupp
S F
SF
Hedley
W J
WJ
Dell'Italia
L J
LJ
D000293:Adolescent; D000328:Adult; D000465:Algorithms; D000818:Animals; D001783:Blood Flow Velocity / Q000502:physiology; D002302:Cardiac Output / Q000502:physiology; D002306:Cardiac Volume / Q000502:physiology*; D003971:Diastole; D004195:Disease Models, Animal; D004285:Dogs; D005260:Female; D020342:Finite Element Analysis; D006352:Heart Ventricles / Q000033:anatomy & histology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D019028:Magnetic Resonance Imaging, Cine / Q000379:methods*; D008297:Male; D008944:Mitral Valve Insufficiency / Q000473:pathology / Q000503:physiopathology; D008955:Models, Cardiovascular; D009203:Myocardial Infarction / Q000473:pathology / Q000503:physiopathology; D013318:Stroke Volume / Q000502:physiology; D013599:Systole; D013997:Time Factors; D016277:Ventricular Function, Left / Q000502:physiology*