Abstract
Motion of the implanted bi-leaflet valves, especially with asynchronous motion, was analyzed quantitatively using X-ray cinefllms. Test cinefilms were 6 SAM valves (5 MVR and 1 AVR). The cinefilm image processing system we have developed were used as a method for the analysis. As a result asynchronous motion of the two leaflets was calculated quantitatively. Maximum difference between two leaflets' angle was found to be 11.3 degree, and any asynchronous form was not similar to each other. The asynchronous motion is considered to be attributed to valve orientation, atrial fibrillation, thrombus, etc. Though X-ray cinefllms are generally investigated qualitatively in the clinical field, quantitative motion analysis of the implanted heart valves will bring new findings and contribute to the advance in the clinical and research field.
