Title :
A model-based procedure for fully automated boundary detection and 3D reconstruction from 2D echocardiograms
Author :
Gustavsson, T. ; Molander, S. ; Pascher, R. ; Liang, Q. ; Broman, H. ; Caidahl, K.
Author_Institution :
Dept. of Appl. Electron Phys., Chalmers Univ. of Technol., Goteborg, Sweden
Abstract :
Describes an automated procedure for boundary detection and 3D reconstruction in echocardiography. Boundary detection is carried out by a combination of knowledge based and dynamic programming procedures. The knowledge based procedure includes a mechanism which controls and evaluates a set of image analysis procedures. The dynamic programming procedure is based on the minimization of a cost function including terms representing echo intensity, edge strength, and boundary continuity in space and time. The 3D reconstruction procedure is based on extracted boundaries from two short-axis and three apical views in conjunction with a geometric model. By replacing conventional bi-plane Simpson method for stroke volume estimation with the authors´ model-based scheme, correlation between echocardiographic and dye dilution based estimates increased from 0.69 to 0.88.<>
Keywords :
echocardiography; image reconstruction; medical image processing; 2D echocardiograms; 3D reconstruction; apical views; boundary continuity; conventional biplane Simpson method; cost function minimization; dye dilution based estimates; dynamic programming; fully automated boundary detection; geometric model; knowledge based procedures; medical diagnostic imaging; model-based procedure; short-axis views; stroke volume estimation; Dynamic programming; Image edge detection; Image reconstruction; Image segmentation; Instruments; Labeling; Laboratories; Optical scattering; Physiology; Solid modeling;
Conference_Titel :
Computers in Cardiology 1994
Conference_Location :
Bethesda, MD, USA
Print_ISBN :
0-8186-6570-X
DOI :
10.1109/CIC.1994.470194
