Simulations of silicon microdosimetry measurements in fast neutron therapy

Cornelius, Iwan; Rosenfeld, Anatoly B.; Bradley, Peter D.

doi:10.1007/bf03178290

Cited by 4 publications

(1 citation statement)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This model was deemed appropriate for this application, as it was suited to the therapeutic energy range that was to be simulated. 6,7 The G4PreCompound model would account for the production of secondary particles as a result of nonelastic reactions, including the generation of charged secondaries, neutrons, and photons. This model theoretically determines nonelastic nuclear interactions and could be further verified through its comparison with doubly differential data for a number of different bombarding energies and target materials; however, this work it outside the scope of this publication.…”

Section: Simulation Parameters Of Absorbed Dose In a Proton Theramentioning

confidence: 99%

The role of nonelastic reactions in absorbed dose distributions from therapeutic proton beams in different medium

2004

View full text Add to dashboard Cite

Many new techniques for delivering radiation therapy are being developed for the treatment of cancer. One of these, proton therapy, is becoming increasingly popular because of the precise way in which protons deliver dose to the tumor volume. In order to achieve this level of precision, extensive treatment planning needs to be carried out to determine the optimum beam energies, energy spread (which determines the width of the spread-out Bragg peak), and angles for each patient's treatment. Due to the level of precision required and advancements in computer technology, there is increasing interest in the use of Monte Carlo calculations for treatment planning in proton therapy. However, in order to achieve optimum simulation times, nonelastic nuclear interactions between protons and the target nucleus within the patient's internal structure are often not accounted for or are simulated using less accurate models such as analytical or ray tracing. These interactions produce high LET particles such as neutrons, alpha particles, and recoil protons, which affect the dose distribution and biological effectiveness of the beam. This situation has prompted an investigation of the importance of nonelastic products on depth dose distributions within various materials including water, A-150 tissue equivalent plastic, ICRP (International Commission on Radiological Protection) muscle, ICRP bone, and ICRP adipose. This investigation was conducted utilizing the GEANT4.5.2 Monte Carlo hadron transport toolkit.

show abstract

Section: Simulation Parameters Of Absorbed Dose In a Proton Theramentioning

confidence: 99%