A GPU-based finite-size pencil beam algorithm with 3D-density correction for radiotherapy dose calculation

Details A GPU-based finite-size pencil beam algorithm with 3D-density correction for radiotherapy dose calculation A GPU-based finite-size pencil beam algorithm with 3D-density correction for radiotherapy dose calculation

2011-03-06

arxiv.org/abs/1103.1164v2

Physics

Medical Physics

Scientific paper

Targeting at the development of an accurate and efficient dose calculation engine for online adaptive radiotherapy, we have implemented a finite size pencil beam (FSPB) algorithm with a 3D-density correction method on GPU. This new GPU-based dose engine is built on our previously published ultrafast FSPB computational framework [Gu et al. Phys. Med. Biol. 54 6287-97, 2009]. Dosimetric evaluations against Monte Carlo dose calculations are conducted on 10 IMRT treatment plans (5 head-and-neck cases and 5 lung cases). For all cases, there is improvement with the 3D-density correction over the conventional FSPB algorithm and for most cases the improvement is significant. Regarding the efficiency, because of the appropriate arrangement of memory access and the usage of GPU intrinsic functions, the dose calculation for an IMRT plan can be accomplished well within 1 second (except for one case) with this new GPU-based FSPB algorithm. Compared to the previous GPU-based FSPB algorithm without 3D-density correction, this new algorithm, though slightly sacrificing the computational efficiency (~5-15% lower), has significantly improved the dose calculation accuracy, making it more suitable for online IMRT replanning.

Affiliated with

Also associated with

No associations

Rating

A GPU-based finite-size pencil beam algorithm with 3D-density correction for radiotherapy dose calculation 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 A GPU-based finite-size pencil beam algorithm with 3D-density correction for radiotherapy dose calculation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A GPU-based finite-size pencil beam algorithm with 3D-density correction for radiotherapy dose calculation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-606197