2026-04-14T03:39:27Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/131532024-05-22T09:49:16Zcom_2072_452955com_2072_2054col_2072_452957

00925njm 22002777a 4500 dc Roura Perez, Eloy author Schneider, Torben author Modat, Marc author Daga, Pankaj author Muhlert, Nils author Chard, Declan author Ourselin, Sebastien author Lladó Bardera, Xavier author Wheeler-Kingshott, Claudia Gandini author 2015 Co-registration of structural T1-weighted (T1w) scans and diffusion tensor imaging (DTI)-derived fractional anisotropy (FA) maps to a common space is of particular interest in neuroimaging, as T1w scans can be used for brain segmentation while DTI can provide microstructural tissue information. While the effect of lesions on registration has been tackled and solutions are available, the issue of atrophy is still open to discussion. Multi-channel (MC) registration algorithms have the advantage of maintaining anatomical correspondence between different contrast images after registration to any target space. In this work, we test the performance of an MC registration approach applied to T1w and FA data using simulated brain atrophy images. Experimental results are compared with a standard single-channel registration approach. Multi-channel registration of fractional anisotropy and T1-weighted images in the presence of atrophy: application to multiple sclerosis Both qualitative and quantitative evaluations are presented, showing that the MC approach provides better alignment with the target while maintaining better T1w and FA co-alignment This work has also been partially supported by “La Fundació la Marató de TV3” and by Retos de Investigación TIN2014-55710-R http://hdl.handle.net/10256/13153 Esclerosi múltiple Multiple sclerosis Imatge -- Segmentació Imaging segmentation Imatges -- Processament -- Tècniques digitals Image processing -- Digital techniques Multi-channel registration of fractional anisotropy and T1-weighted images in the presence of atrophy: application to multiple sclerosis