Efficiently computing and registering digitally reconstructed radiographs

Téllez Hernandorena, Juan Pablo, Su, Yu and Fisher, Mark (2006) Efficiently computing and registering digitally reconstructed radiographs. In: 18th International Conference on Systems Engineering, 2006-09-05 - 2006-09-07, Coventry University.

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Abstract

Generation of digitally reconstructed radiographs (DRRs) is computationally expensive and has been cited as the rate-limiting step in the execution time of intensity-based two-dimensional/three-dimensional registration algorithms. This paper considers the problem of generating DRRs by conventional ray tracing. Experiments confirm that good quality reconstructions can be obtained using this approach in a few seconds. We evaluate the approach for automatic patient setup prior to radiotherapy treatment by performing intensity based 2D-3D registration using normalized cross correlation. Preliminary results using a pelvic CT data set show the method is accurate to about ±2 pixels (i.e. ±0.3 mm).

Item Type:	Conference or Workshop Item (Paper)
Additional Information:	Supplement
Faculty \ School:	Faculty of Science > School of Computing Sciences
UEA Research Groups:	Faculty of Science > Research Groups > Visual Computing and Signal Processing
Depositing User:	Vishal Gautam
Date Deposited:	09 Jun 2011 14:14
Last Modified:	29 Jan 2025 00:01
URI:	https://ueaeprints.uea.ac.uk/id/eprint/21937
DOI:

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