A generalized 2D pencil beam scaling algorithm for proton dose calculation in heterogeneous slab geometries
نویسندگان
چکیده
منابع مشابه
A 3D pencil-beam-based superposition algorithm for photon dose calculation in heterogeneous media.
In this work, a novel three-dimensional superposition algorithm for photon dose calculation is presented. The dose calculation is performed as a superposition of pencil beams, which are modified based on tissue electron densities. The pencil beams have been derived from Monte Carlo simulations, and are separated into lateral and depth-directed components. The lateral component is modeled using ...
متن کاملFast Pencil Beam Dose Calculation for Proton Therapy Using a Double-Gaussian Beam Model
The highly conformal dose distributions produced by scanned proton pencil beams (PBs) are more sensitive to motion and anatomical changes than those produced by conventional radiotherapy. The ability to calculate the dose in real-time as it is being delivered would enable, for example, online dose monitoring, and is therefore highly desirable. We have previously described an implementation of a...
متن کاملA GPU-Based Pencil Beam Algorithm for Dose Calculations in Proton Radiation Therapy
Recent developments in radiation therapy have been focused on applications of charged particles, especially—protons. Proton therapy can allow higher dose conformality compared to conventional radiation therapy. Dose calculations have an integral role in the successful application of proton therapy. Over the years several dose calculation methods have been proposed in proton therapy. A common ch...
متن کاملComprehensive proton dose algorithm using pencil beam redefinition and recursive dynamic splitting
We describe a new pencil beam (PB) algorithm that computes, from first principles, absolute fluence or dose per incident proton charge in a known heterogeneous terrain irradiated by known proton beams. PB transport is by standard Fermi-Eyges theory. Heterogeneites are handled by breaking up PBs using redefinition and recursive dynamic splitting. The terrain is discretized into uniform or hetero...
متن کاملSU-E-T-500: Pencil-Beam versus Monte Carlo Based Dose Calculation for Proton Therapy Patients with Complex Geometries. Clinical Use of the TOPAS Monte Carlo System.
PURPOSE To investigate the necessity of the verification of dose distributions using Monte Carlo (MC) simulations for proton therapy of head and neck patients and other complex patient geometries. METHODS TOPAS, a TOol for PArticle Simulations that makes MC simulations easy-to-use for research and clinical use and is layered on top of Geant4, has been used to simulate the treatments of head a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Medical Physics
سال: 2013
ISSN: 0094-2405
DOI: 10.1118/1.4804055