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

Authors:
Tristan Glatard;Xavier Pennec;Johan Montagnat
Affiliations:
INRIA Sophia – Projet Asclepios, Sophia Antipolis, France;INRIA Sophia – Projet Asclepios, Sophia Antipolis, France;CNRS – I3S unit, RAINBOW team, Sophia Antipolis, France
Venue:
MICCAI'06 Proceedings of the 9th international conference on Medical Image Computing and Computer-Assisted Intervention - Volume Part II
Year:
2006

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Abstract

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.