Water Migration and Swelling in Engineered Barrier Materials for Radioactive Waste Disposal [0.03%]
放射性废物处置屏障材料的渗水与膨胀性能研究进展
Joanna McFarlane,Lawrence M Anovitz,Michael C Cheshire et al.
Joanna McFarlane et al.
Deep, underground repositories are needed to isolate radioactive waste from the biosphere. Because bentonite is an integral component of many multibarrier repository systems, information on the hydraulic behavior of bentonite is crucial for...
David J Mercer,Katrina E Koehler,Mark P Croce et al.
David J Mercer et al.
We report gamma ray spectroscopy measurements of trinitite samples and analogous samples obtained from detonation sites in Nevada and Semipalatinsk, as well as in situ measurements of topsoil at the Trinity site. We also report the first is...
GRID-ENABLED TREATMENT PLANNING FOR PROTON THERAPY USING MONTE CARLO SIMULATIONS [0.03%]
基于蒙特卡罗模拟的 proton治疗网格化方案设计
Ravi Vadapalli,Pablo Yepes,Wayne Newhauser et al.
Ravi Vadapalli et al.
Grid computing is an emerging technology that enables computational tasks to be accomplished in a collaborative approach by using a distributed network of computers. The grid approach is especially important for computationally intensive pr...
ADVANTAGES OF MCNPX-BASED LATTICE TALLY OVER MESH TALLY IN HIGH-SPEED MONTE CARLO DOSE RECONSTRUCTION FOR PROTON RADIOTHERAPY [0.03%]
基于MCNPX的格点计算在质子放射治疗高剂量率蒙特卡罗剂量重建中的优势研究
Rui Zhang,Jonas D Fontenot,Dragan Mirkovic et al.
Rui Zhang et al.
Monte Carlo simulations are increasingly used to reconstruct dose distributions in radiotherapy research studies. Many studies have used the MCNPX Monte Carlo code with a mesh tally for dose reconstructions. However, when the number of voxe...
COMPARISON OF PARTICLE-TRACKING FEATURES IN GEANT4 AND MCNPX CODES FOR APPLICATIONS IN MAPPING OF PROTON RANGE UNCERTAINTY [0.03%]
GEANT4和MCNPX中粒子追踪功能在质子束范围不确定度绘图方面对比研究
Bryan Bednarz,Gty Chen,Harald Paganetti et al.
Bryan Bednarz et al.
The accuracy of proton therapy is partially limited by uncertainties that result from changing pathological conditions in the patient such as tumor motion and shrinkage. These uncertainties can be minimized with the help of a time-resolved ...
Contribution to Neutron Fluence and Neutron Absorbed Dose from Double Scattering Proton Therapy System Components [0.03%]
双散射质子治疗系统部件的中子通量和中子吸收剂量贡献
A Pérez-Andújar,W D Newhauser,P M Deluca Jr
A Pérez-Andújar
Proton therapy offers low integral dose and good tumor comformality in many deep-seated tumors. However, secondary particles generated during proton therapy, such as neutrons, are a concern, especially for passive scattering systems. In thi...
REDUCING STRAY RADIATION DOSE FOR A PEDIATRIC PATIENT RECEIVING PROTON CRANIOSPINAL IRRADIATION [0.03%]
减少接受质子颅脊放疗的儿科患者的散射辐射剂量
Phillip J Taddei,Dragan Mirkovic,Jonas D Fontenot et al.
Phillip J Taddei et al.
The aim of this study was to quantify stray radiation dose from neutrons emanating from a proton treatment unit and to evaluate methods of reducing this dose for a pediatric patient undergoing craniospinal irradiation. The organ equivalent ...
Intercomparision of Monte Carlo Radiation Transport Codes MCNPX, GEANT4, and FLUKA for Simulating Proton Radiotherapy of the Eye [0.03%]
MCNPX、GEANT4和FLUKA代码在模拟眼部质子放射治疗中的相互比较研究
S D Randeniya,P J Taddei,W D Newhauser et al.
S D Randeniya et al.
Monte Carlo simulations of an ocular treatment beam-line consisting of a nozzle and a water phantom were carried out using MCNPX, GEANT4, and FLUKA to compare the dosimetric accuracy and the simulation efficiency of the codes. Simulated cen...
A TRACK-REPEATING ALGORITHM FOR FAST MONTE CARLO DOSE CALCULATIONS OF PROTON RADIOTHERAPY [0.03%]
一种用于快速质子治疗蒙特卡罗剂量计算的轨迹重复算法
Pablo Yepes,Sharmalee Randeniya,Phillip J Taddei et al.
Pablo Yepes et al.
Monte Carlo codes are utilized for accurate dose calculations in proton radiation therapy research. While they are superior in accuracy to commonly used analytical dose calculations, they require significantly longer computation times. The ...
AMBIENT DOSE EQUIVALENT VERSUS EFFECTIVE DOSE FOR QUANTIFYING STRAY RADIATION EXPOSURES TO A PATIENT RECEIVING PROTON THERAPY FOR PROSTATE CANCER [0.03%]
stray辐射照射量评估的等效剂量与当量剂量比较- -前列腺癌患者质子治疗的案例
Jonas D Fontenot,Phillip Taddei,Yuanshui Zheng et al.
Jonas D Fontenot et al.
The purpose of this study was to evaluate the suitability of the quantity ambient dose equivalent H*(10) as a conservative estimate of effective dose E for estimating stray radiation exposures to patients receiving passively scattered proto...