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. 2014 May 22;2014:960928. doi: 10.1155/2014/960928

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Copyright © 2014 Kenshiro Shiraishi et al.

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

PMC Copyright notice

Prostate axial images of the planning CT and intrafraction cone-beam CT (CBCT) during volumetric modulated arc therapy for 14 prostate patients. The planning CT data were isotropically resampled by 1 mm pitch to equalize the voxel dimensions with the CBCT data. Three-dimensional image cross-correlation of the prostate volume between the planning CT and the CBCT data was calculated in each fraction and the translational positioning errors were calculated by searching the maximum of the cross-correlation.