Results 21 to 30 of about 1,523,547 (310)

Treatment planning with a 2.5 MV photon beam for radiation therapy

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi, Chris Hayes, Louise Belshaw, Mark Grattan, Rao Khan, James L. Gräfe   +5 more
wiley   +1 more source

Regional Nodal Irradiation in Early-Stage Breast Cancer.

New England Journal of Medicine, 2015
METHODS We randomly assigned women with node-positive or high-risk node-negative breast cancer who were treated with breast-conserving surgery and adjuvant systemic therapy to undergo either whole-breast irradiation plus regional nodal irradiation ...
T. Whelan, I. Olivotto, M. Levine
semanticscholar   +3 more sources

Volume staging for arteriovenous malformation SRS treatment using VMAT

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
wiley   +1 more source

FLASH Irradiation Results in Reduced Severe Skin Toxicity Compared to Conventional-Dose-Rate Irradiation

Radiation Research, 2020
Radiation therapy, along with surgery and chemotherapy, is one of the main treatments for cancer. While radiotherapy is highly effective in the treatment of localized tumors, its main limitation is its toxicity to normal tissue.
Luis A. Soto, Kerriann M. Casey, Jinghui Wang, Alexandra Blaney, R. Manjappa, D. Breitkreutz, L. Skinner, S. Dutt, R. Ko, K. Bush, Amy S. Yu, S. Melemenidis, S. Strober, Edgar Englemann, P. Maxim, E. Graves, B. Loo   +16 more
semanticscholar   +1 more source

Validation of pencil beam scanning proton therapy with multi‐leaf collimator calculated by a commercial Monte Carlo dose engine

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract This study aimed to evaluate the clinical beam commissioning results and lateral penumbra characteristics of our new pencil beam scanning (PBS) proton therapy using a multi‐leaf collimator (MLC) calculated by use of a commercial Monte Carlo dose engine.
Yuki Tominaga, Yusuke Sakurai, Junya Miyata, Shuichi Harada, Takashi Akagi, Masataka Oita   +5 more
wiley   +1 more source

Peripherally derived macrophages can engraft the brain independent of irradiation and maintain an identity distinct from microglia

Journal of Experimental Medicine, 2018
Peripherally derived macrophages infiltrate the brain after bone marrow transplantation and during central nervous system (CNS) inflammation. It was initially suggested that these engrafting cells were newly derived microglia and that irradiation was ...
James C. Cronk, A. Filiano, A. Louveau, Ioana A. Marin, R. Marsh, Emily Ji, Dylan H. Goldman, Igor Smirnov, Nicholas Geraci, S. Acton, Christopher C. Overall, J. Kipnis   +11 more
semanticscholar   +1 more source

Evaluation of an EPID in vivo monitoring system using local and external independent audit measurements

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The aim of this work was to evaluate the SunCHECK PerFRACTION, the software for in vivo monitoring using EPID images. Materials/Methods First, the PerFRACTION ability to detect errors was investigated simulating two situations: (1) variation of LINAC output and (2) variation of the phantom thickness.
Samuel Ramalho Avelino, Juliana Rosada Dias, Taís Marques Peron, Gabriel Souza Vidal   +3 more
wiley   +1 more source

Proton Radiation Effects on Dark Signal Distribution of PPD CMOS Image Sensors: Both TID and DDD Effects

Sensors, 2017
Four-transistor (T) pinned photodiode (PPD) CMOS image sensors (CISs) with four-megapixel resolution using 11µm pitch high dynamic range pixel were radiated with 3 MeV and 10MeV protons. The dark signal was measured pre- and post-radiation, with the dark
Yuanyuan Xue, Zujun Wang, Wei Chen, Minbo Liu, Baoping He, Zhibin Yao, Jiangkun Sheng, Wuying Ma, Guantao Dong, Junshan Jin   +9 more
doaj   +1 more source

Digital radiography image quality evaluation using various phantoms and software

Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the effect of the exposure parameters on image quality (IQ) metrics of phantom images, obtained automatically using software or from visual evaluation. Methods Three commercial phantoms and a homemade phantom constructed according to the instructions given in the IAEA Human Health Series No.
Ioannis A. Tsalafoutas, Shady AlKhazzam, Virginia Tsapaki, Huda AlNaemi, Mohammed Hassan Kharita   +4 more
wiley   +1 more source

In vitro expansion affects the response of human bone marrow stromal cells to irradiation

Stem Cell Research & Therapy, 2019
Background Bone marrow stromal cells (BMSCs) are extensively used in regeneration therapy and cytology experiments simulate how BMSCs respond to radiation.
Yang Xiang, Chun Wu, Jiang Wu, Weili Quan, Chao Cheng, Jian Zhou, Li Chen, Lixin Xiang, Fengjie Li, Kebin Zhang, Qian Ran, Yi Zhang, Zhongjun Li   +12 more
doaj   +1 more source