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A large number of algorithms have been developed to perform non-rigid registration
and it is a tool commonly used in medical image analysis. The free-form deformation
algorithm is a well-established technique, but is extremely time consuming. In this
paper we present a parallel-friendly formulation of the algorithm suitable for graphics
processing unit execution. Using our approach we perform registration of T1-weighted
MR images in less than 1 min and show the same level of accuracy as a classical serial
implementation when performing segmentation propagation. This technology could be
of significant utility in time-critical applications such as image-guided interventions,
or in the processing of large data sets.
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