Title :
Bioprosthetic heart valve leaflet deformation monitored by double pulse stereo photogrammetry
Author :
Pandya, S. ; Gao, B.Z. ; Hwang, Ned H C
Author_Institution :
Dept. of Biomed. Eng., Miami Univ., Coral Gables, FL, USA
Abstract :
Clinical application of bioprosthetic heart valves has been severely limited by the lack of valve durability. Among other contributing factors, one of the most evident is the stress and strain distribution in the leaflets. The focus of this paper is on the development of a new imaging technique to monitor the surface deformation of the leaflet under physiological conditions. The 3-D deformations of leaflet surfaces corresponding to the different phases of one cardiac cycle are reconstructed
Keywords :
biomechanics; cardiology; medical image processing; photogrammetry; prosthetics; stereo image processing; stress-strain relations; surface fitting; 3-D deformations; CCD cameras; aortic valve; bioprosthetic heart valves; cardiac cycle phases; double pulse stereo photogrammetry; double-pulse imaging technique; field integration mode; leaflet deformation; machine vision strobe light; pericardial tissue valve; strain distribution; stress distribution; stress-strain state; surface reconstruction; valve durability; Biomedical monitoring; Biomedical optical imaging; Capacitive sensors; Charge coupled devices; Charge-coupled image sensors; Heart valves; Image reconstruction; Optical imaging; Stress; Surface reconstruction;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.802220
