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Evaluation of various image descriptor for motion correction between pre- and post-injected cardiac T1 maps, based on a demon algorithm
Habib Rebbah1, Anaîs Bernard1, Julien Rouyer1, and Timothé Boutelier1
1Research & Innovation, Olea Medical, La Ciotat, France
The Sobel filter is the most adequate descriptor for registration of pre- and post-injected T1 maps. The main influencing parameters on its performances are the lesion size, the cross-slice motion and the cardiac phase mismatch
Images descriptors for the same slice in pre- (first line) and post-injected (second line) MOLLI. The original images (first column) correspond to the higher TI images.
Global evaluation of the performances of the registration algorithms in term of Dice (1st line), HD (2nd line) and NMI (3rd line). The second column presents the difference between the algorithm’s performance before and after motion correction. The table below presents the average results (+/-sd) for each parameter (rows) and each descriptor (columns).