Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation

Details Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation

2011-09-15

arxiv.org/abs/1109.3266v2

Physics

Medical Physics

18 pages, 7 figures, and 1 table

Scientific paper

Recently, X-ray imaging dose from computed tomography (CT) or cone beam CT (CBCT) scans has become a serious concern. Patient-specific imaging dose calculation has been proposed for the purpose of dose management. While Monte Carlo (MC) dose calculation can be quite accurate for this purpose, it suffers from low computational efficiency. In response to this problem, we have successfully developed a MC dose calculation package, gCTD, on GPU architecture under the NVIDIA CUDA platform for fast and accurate estimation of the x-ray imaging dose received by a patient during a CT or CBCT scan. Techniques have been developed particularly for the GPU architecture to achieve high computational efficiency. Dose calculations using CBCT scanning geometry in a homogeneous water phantom and a heterogeneous Zubal head phantom have shown good agreement between gCTD and EGSnrc, indicating the accuracy of our code. In terms of improved efficiency, it is found that gCTD attains a speed-up of ~400 times in the homogeneous water phantom and ~76.6 times in the Zubal phantom compared to EGSnrc. As for absolute computation time, imaging dose calculation for the Zubal phantom can be accomplished in ~17 sec with the average relative standard deviation of 0.4%. Though our gCTD code has been developed and tested in the context of CBCT scans, with simple modification of geometry it can be used for assessing imaging dose in CT scans as well.

Affiliated with

Also associated with

No associations

Rating

Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging 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 Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fast Monte Carlo Simulation for Patient-specific CT/CBCT Imaging Dose Calculation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-672523