Physics – Medical Physics
Scientific paper
2009-05-15
Physica Medica 27(2) 97-102, 2011
Physics
Medical Physics
Scientific paper
10.1016/j.ejmp.2010.05.001
This work addresses computing techniques for dose calculations in treatment planning with proton and ion beams, based on an efficient kernel-convolution method referred to as grid-dose spreading (GDS) and accurate heterogeneity-correction method referred to as Gaussian beam splitting. The original GDS algorithm suffered from distortion of dose distribution for beams tilted with respect to the dose-grid axes. Use of intermediate grids normal to the beam field has solved the beam-tilting distortion. Interplay of arrangement between beams and grids was found as another intrinsic source of artifact. Inclusion of rectangular-kernel convolution in beam transport, to share the beam contribution among the nearest grids in a regulatory manner, has solved the interplay problem. This algorithmic framework was applied to a tilted proton pencil beam and a broad carbon-ion beam. In these cases, while the elementary pencil beams individually split into several tens, the calculation time increased only by several times with the GDS algorithm. The GDS and beam-splitting methods will complementarily enable accurate and efficient dose calculations for radiotherapy with protons and ions.
No associations
LandOfFree
Dose calculation algorithm of fast fine-heterogeneity correction for heavy charged particle radiotherapy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dose calculation algorithm of fast fine-heterogeneity correction for heavy charged particle radiotherapy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dose calculation algorithm of fast fine-heterogeneity correction for heavy charged particle radiotherapy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-524355