Title :
Computing an average anatomical atlas using LDDMM and geodesic shooting
Author :
Beg, M. Faisal ; Khan, Ali
Author_Institution :
Sch. of Eng. Sci., Simon Fraser Univ., Burnaby, BC
Abstract :
Average 3D digital atlas construction from a set of images is an important task for registration and assessment of intra- and inter-population differences in structural and functional imagery. In this paper, we describe the computation of an average atlas using LDDMM and geodesic shooting where the velocity vector fields transforming a provisional template to the ensemble are averaged and evolved via shooting using the equation for the geodesic conservation of momentum to give the average atlas. This guarantees that the averaged atlas so computed remains within the permissible shape space of the anatomical ensemble being averaged
Keywords :
biomedical MRI; differential geometry; image registration; medical image processing; 3D digital atlas construction; LDDMM; MR images; average anatomical atlas; functional imagery; geodesic shooting; image registration; interpopulation differences; intrapopulation differences; large deformations diffeomorphics metric mapping; structural imagery; velocity vector fields; Anatomy; Biomedical engineering; Biomedical imaging; Equations; Geophysics computing; Image analysis; Laboratories; Shape; Statistical analysis; Vectors;
Conference_Titel :
Biomedical Imaging: Nano to Macro, 2006. 3rd IEEE International Symposium on
Conference_Location :
Arlington, VA
Print_ISBN :
0-7803-9576-X
DOI :
10.1109/ISBI.2006.1625118
