Title :
Spatio-temporal registration in coronary angiography
Author :
Gu, J. ; Toumoulin, C. ; Shu, H.
Author_Institution :
Laboratory of Image Sci. & Technol., Southeast Univ., Nanjing, China
Abstract :
This paper presents a method for spatio-temporal matching of extracted vessels represented by their centrelines in X-ray angiography sequences. It can be seen also as a registration by establishing correspondences in time and in space between consecutive image frames. It allows finding a temporal mapping and one-to-one correspondences between features points while rejecting non-homologies. It relies on an elastic thin-plate spline model to estimate the non-rigid motion induced by the heart and find the point correspondences between two images. The optimization process is led through a simulated annealing.
Keywords :
diagnostic radiography; image registration; image sequences; medical image processing; simulated annealing; spatiotemporal phenomena; splines (mathematics); X-ray angiography sequences; consecutive image frames; coronary angiography; elastic thin-plate spline model; extracted vessels; nonrigid motion; optimization process; simulated annealing; spatiotemporal matching; spatiotemporal registration; temporal mapping; Analytical models; Angiography; Heart; Image segmentation; Interpolation; Laboratories; Motion estimation; Simulated annealing; Spline; X-ray imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 2003. Proceedings of the 25th Annual International Conference of the IEEE
Print_ISBN :
0-7803-7789-3
DOI :
10.1109/IEMBS.2003.1279812
