Results 31 to 40 of about 168,547,723 (230)

Simulation and experimental verification of ambient neutron doses in a pencil beam scanning proton therapy room as a function of treatment plan parameters

Frontiers in Oncology, 2022
Out-of-field patient doses in proton therapy are dominated by neutrons. Currently, they are not taken into account by treatment planning systems. There is an increasing need to include out-of-field doses in the dose calculation, especially when treating ...
Olivier Van Hoey, Liliana Stolarczyk, Liliana Stolarczyk, Liliana Stolarczyk, Jan Lillhök, Linda Eliasson, Natalia Mojzeszek, Malgorzata Liszka, Malgorzata Liszka, Ali Alkhiat, Ali Alkhiat, Vladimir Mares, François Trompier, Sebastian Trinkl, Sebastian Trinkl, Immaculada Martínez-Rovira, Maite Romero-Expósito, Carles Domingo, Ondrej Ploc, Roger Harrison, Pawel Olko   +20 more
doaj   +1 more source

Measurement of Reference Radiation Spectrum of Isotopic Neutron Source and Analysis of Simulated Neutron Spectrum

Journal of Isotopes, 2023
The neutron reference radiation field of different components is the basic condition for the performance test of neutron shielding materials. In order to obtain an ideal neutron field for neutron protection material testing, a multi sphere energy ...
LI Ziping;TANG Zhihui;LI Da;FENG Mei;JIANG Hong;LI Duohong;ZHOU Zhibo
doaj   +1 more source

Estimating Radiotherapy-Induced Secondary Cancer Risk Arising from Brain Irradiation at High Energy: A Monte Carlo Study

Frontiers in Biomedical Technologies, 2021
Background: The present study aims to determine the whole-body out-of-field photon dose equivalents of high-energy conventional radiation therapy treatment.
Soheil Elmtalab, Amir Hossein Karimi, Fardin Samadi Khoshe Mehr, Hamed Zamani, Iraj Abedi, Fakhereh Pashaei   +5 more
doaj   +1 more source

Origins of the observed asymmetry in out-of-field dose from a linac fitted with an external micro-MLC

, 2011
Objective \ud \ud Recently, Taylor et al. reported that use of the BrainLAB m3 microMLC, for stereotactic radiosurgery, results in a decreased out-of-field dose in the direction of leaf-motion compared to the outof- field dose measured in the direction ...
Taylor, M.L., Kairn, T., Franich, R., Kron, T., Trapp, J.   +4 more
core   +1 more source

Nontarget and Out-of-Field Doses from Electron Beam Radiotherapy

Life, 2022
In clinical radiotherapy, the most important aspects are the dose distribution in the target volume and healthy organs, including out-of-field doses in the body.
Natalia Matuszak, Marta Kruszyna-Mochalska, Agnieszka Skrobala, Adam Ryczkowski, Piotr Romanski, Igor Piotrowski, Katarzyna Kulcenty, Wiktoria Maria Suchorska, Julian Malicki   +8 more
doaj   +1 more source

Impact of Radiation Therapy on Physical and Psychosocial Health of Adolescents and Young Adults: A Joint Report From the Children's Oncology Group AYA and Radiation Oncology Committees

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Rates of cancer among adolescents and young adults (AYA), age 15–39 years, are increasing. Consequently, radiation oncologists are treating more AYAs who have diagnoses spanning both pediatric and adult practices. Compared to pediatric and older adult patients, AYAs face a unique set of challenges.
Hesham Elhalawani, Rachel K. Peterson, Avani D. Rao, Laurie J. McKenzie, Ahmed Magdy Elmotayam, Leslie Chang, Michael Roth, Susan L. McGovern   +7 more
wiley   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Characterization of a 6 MV photon beam in terms of primary and scattered dose components [PDF]

, 2009
The purpose of this work was to partition the 6 MV photon beam of a Philips SL75-5 linear accelerator into primary and scattered dose components in water.
Trauernicht, Christoph Jan
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Comprehensive analysis of peripheral dose in electron beam therapy with a Varian TrueBeam Linac

Radiation Medicine and Protection
Objective: To investigate the characteristics of peripheral doses outside electron-beam applicators in Varian TrueBeam linacs. Method: Peripheral doses outside the electron applicator were measured for 6-, 9- and 12-MeV beams at the maximum dose depth ...
Kapil Dev Maharaj, Mahsheed Sabet, Joshua Dass, Mounir Ibrahim, Talat Mahmood, Pejman Rowshanfarzad   +5 more
doaj   +1 more source