High-speed registration of three- and four-dimensional medical images by using voxel similarity.

  title={High-speed registration of three- and four-dimensional medical images by using voxel similarity.},
  author={Raj Shekhar and Vladimir Zagrodsky and Carlos R. Castro-Pareja and Vivek Walimbe and Jogikal M. Jagadeesh},
  journal={Radiographics : a review publication of the Radiological Society of North America, Inc},
  volume={23 6},
  • R. Shekhar, V. Zagrodsky, J. Jagadeesh
  • Published 1 November 2003
  • Physics, Medicine
  • Radiographics : a review publication of the Radiological Society of North America, Inc
A generalized, accurate, automatic, retrospective method of image registration for three-dimensional images has been developed. The method is based on mutual information, a specific measure of voxel similarity, and is applicable to a wide range of imaging modalities and organs, rigid or deformable. A drawback of mutual information-based image registration is long execution times. To overcome the speed problem, low-cost, customized hardware to accelerate this computationally intensive task was… 

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