Results 21 to 30 of about 2,542,698 (234)

Nuclear effects in proton transport and dose calculations [PDF]

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 2020
Interactions of protons with nuclei are modeled in a form that is suitable for Monte Carlo simulation of proton transport. The differential cross section (DCS) for elastic collisions of protons with neutral atoms is expressed as the product of the Rutherford DCS, which describes scattering by a bare point nucleus, and two correction factors that ...
Francesc Salvat, José Manuel Quesada
openaire   +2 more sources

Single energy CT-based mass density and relative stopping power estimation for proton therapy using deep learning method

Frontiers in Oncology, 2023
BackgroundThe number of patients undergoing proton therapy has increased in recent years. Current treatment planning systems (TPS) calculate dose maps using three-dimensional (3D) maps of relative stopping power (RSP) and mass density.
Yuan Gao, Chih-Wei Chang, Justin Roper, Marian Axente, Yang Lei, Shaoyan Pan, Jeffrey D. Bradley, Jun Zhou, Tian Liu, Tian Liu, Xiaofeng Yang, Xiaofeng Yang   +11 more
doaj   +1 more source

Feasibility of proton transmission-beam stereotactic ablative radiotherapy versus photon stereotactic ablative radiotherapy for lung tumors: a dosimetric and feasibility study. [PDF]

PLoS ONE, 2014
Stereotactic ablative radiotherapy is being increasingly adopted in the treatment of lung tumors. The use of proton beam therapy can further reduce dose to normal structures.
Benjamin Mou, Chris J Beltran, Sean S Park, Kenneth R Olivier, Keith M Furutani   +4 more
doaj   +1 more source

A Review of the Robust Optimization Process and Advances with Monte Carlo in the Proton Therapy Management of Head and Neck Tumors [PDF]

International Journal of Particle Therapy, 2021
In intensity-modulated proton therapy, robust optimization processes have been developed to manage uncertainties associated with (1) range, (2) setup, (3) anatomic changes, (4) dose calculation, and (5) biological effects.
Xiaodong Zhang, PhD
doaj   +1 more source

A GPU-based Pencil Beam Algorithm for Dose Calculations in Proton Radiation Therapy [PDF]

International Journal of Networked and Distributed Computing (IJNDC), 2015
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.
Georgios Kalantzis, Theodora Leventouri, Hidenobu Tachibana, Charles Shang   +3 more
doaj   +1 more source

Dosimetric response of Gafchromic™ EBT‐XD film to therapeutic protons

Precision Radiation Oncology, 2023
The EBT‐XD model of Gafchromic™ films has a broader optimal dynamic dose range, up to 40 Gy, compared with its predecessor models. This characteristic has made EBT‐XD films suitable for high‐dose applications, such as stereotactic body radiotherapy and ...
Fada Guan, Xiaochun Wang, Ming Yang, Emily Draeger, Dae Han, Kiminori Iga, Fanqing Guo, Luis Perles, Yuting Li, Narayan Sahoo, Radhe Mohan, Zhe Chen   +11 more
doaj   +1 more source

Treatment planning of total marrow irradiation with intensity-modulated spot-scanning proton therapy

Frontiers in Oncology, 2022
PurposeThe goal of this study is to investigate treatment planning of total marrow irradiation (TMI) using intensity-modulated spot-scanning proton therapy (IMPT).
Darren M. Zuro, Gabriel Vidal, James Nathan Cantrell, Yong Chen, Chunhui Han, Christina Henson, Salahuddin Ahmad, Susanta Hui, Imad Ali   +8 more
doaj   +1 more source

Application of virtual noncontrast CT generation technology from intravenous enhanced CT based on deep learning in proton radiotherapy

Journal of Radiation Research and Applied Sciences, 2022
Objective: The aim of this study is to generate virtual noncontrast (VNC) computed tomography (CT) from intravenous enhanced CT by using Unet convolutional neural network (CNN).
Jianfeng Sui, Liugang Gao, Haijiao Shang, Chunying Li, Zhengda Lu, Mu He, Tao Lin, Kai Xie, Jiawei Sun, Hui Bi, Xinye Ni   +10 more
doaj   +1 more source

Dual-Energy Computed Tomography Proton-Dose Calculation with Scripting and Modified Hounsfield Units [PDF]

International Journal of Particle Therapy, 2021
Purpose: To describe an implementation of dual-energy computed tomography (DECT) for calculation of proton stopping-power ratios (SPRs) in a commercial treatment-planning system.
Anthony Kassaee, MS, Chingyun Cheng, PhD, Lingshu Yin, PhD, Wei Zou, PhD, Taoran Li, PhD, Alexander Lin, MD, Samuel Swisher-McClure, MD, John N. Lukens, MD, Robert A. Lustig, MD, Shannon O’Reilly, PhD, Lei Dong, PhD, Roni Hytonen, MS, Boon-Keng Kevin Teo, PhD   +12 more
doaj   +1 more source

Anthropomorphic lung phantom based validation of in-room proton therapy 4D-CBCT image correction for dose calculation

Zeitschrift für Medizinische Physik, 2022
Purpose: Ventilation-induced tumour motion remains a challenge for the accuracy of proton therapy treatments in lung patients. We investigated the feasibility of using a 4D virtual CT (4D-vCT) approach based on deformable image registration (DIR) and ...
David Bondesson, Arturs Meijers, Guillaume Janssens, Simon Rit, Moritz Rabe, Florian Kamp, Katharina Niepel, Lydia A. den Otter, Stefan Both, Sebastien Brousmiche, Julien Dinkel, Claus Belka, Katia Parodi, Antje Knopf, Christopher Kurz, Guillaume Landry   +15 more
doaj   +1 more source