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Performance evaluation of grid-enabled registration algorithms using bronze-standards

Evaluating registration algorithms is difficult due to the lack of gold standard in most clinical procedures. The bronze standard is a real-data based statistical method providing an alternative registration reference through a computationally intensive image database registration procedure. We prop...

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Detalles Bibliográficos
Autores principales: Glatard, T, Pennec, X, Montagnat, J
Lenguaje:eng
Publicado: 2006
Materias:
XX
Acceso en línea:http://cds.cern.ch/record/982962
Descripción
Sumario:Evaluating registration algorithms is difficult due to the lack of gold standard in most clinical procedures. The bronze standard is a real-data based statistical method providing an alternative registration reference through a computationally intensive image database registration procedure. We propose in this paper an efficient implementation of this method through a grid-interfaced workflow enactor enabling the concurrent processing of hundreds of image registrations in a couple of hours only. The performances of two different grid infrastructures were compared. We computed the accuracy of 4 different rigid registration algorithms on longitudinal MRI images of brain tumors. Results showed an average subvoxel accuracy of 0.4 mm and 0.15 degrees in rotation.