Results 11 to 20 of about 885,465 (288)

Neutron exposures in human cells: bystander effect and relative biological effectiveness. [PDF]

PLoS ONE, 2014
Bystander effects have been observed repeatedly in mammalian cells following photon and alpha particle irradiation. However, few studies have been performed to investigate bystander effects arising from neutron irradiation. Here we asked whether neutrons
Isheeta Seth, Jeffrey L Schwartz, Robert D Stewart, Robert Emery, Michael C Joiner, James D Tucker   +5 more
doaj   +4 more sources

Biological effectiveness and relative biological effectiveness of ion beams for in-vitro cell irradiation. [PDF]

Cancer Sci, 2022
AbstractBiological effectiveness and relative biological effectiveness are critical for proton and ion beam radiotherapy. However, the relationship between the two quantities and physical character of ion beams is not well established. By analyzing 1188 sets of in‐vitro cell irradiation experiments using ion beams ranging from protons to 238U, compiled
Li H.
europepmc   +3 more sources

A Computational Method to Estimate the Effect of Gold Nanoparticles on X-Ray Induced Dose Enhancement and Double-Strand Break Yields

IEEE Access, 2021
We report the effects of gold nanoparticles (GNP) on the enhancement of the dose effect and double-strand break (DSB) induction for X-ray monoenergies (10 keV–2 MeV).
Ya-Yun Hsiao, Feng-Chun Tai, Chun-Chieh Chan, Ching-Chih Tsai   +3 more
doaj   +1 more source

Self and Relative Effects of Competitive State Anxiety on Per-ceived Performance in Middle and High School Taekwondo Ath-letes: An Actor and Partner Interdependence Model Analysis

Iranian Journal of Public Health, 2021
Background: The present study aimed to provide an empirical theoretical basis for the psychological phenomena that occur among competing athletes. To this end, we utilized the actor and partner interdependence model (APIM) to analyze the self- and ...
Hyunwoo Kang, Seyong Jang
doaj   +1 more source

A Critical Review of LET-Based Intensity-Modulated Proton Therapy Plan Evaluation and Optimization for Head and Neck Cancer Management [PDF]

International Journal of Particle Therapy, 2021
In this review article, we review the 3 important aspects of linear-energy-transfer (LET) in intensity-modulated proton therapy (IMPT) for head and neck (H&N) cancer management.
Wei Deng, PhD, Yunze Yang, PhD, Chenbin Liu, PhD, Martin Bues, PhD, Radhe Mohan, PhD, William W. Wong, MD, Robert H. Foote, MD, Samir H. Patel, MD, Wei Liu, PhD   +8 more
doaj   +1 more source

Proton Relative Biological Effectiveness - Uncertainties and Opportunities. [PDF]

Int J Part Ther, 2018
Proton therapy treatments are prescribed using a biological effectiveness relative to photon therapy of 1.1, that is, proton beams are considered to be 10% more biologically effective. Debate is ongoing as to whether this practice needs to be revised.
Paganetti H.
europepmc   +4 more sources

Predicting the Biological Effects of Human Salivary Gland Tumour Cells for Scanned ⁴He-, ¹²C-, ¹⁶O-, and ²⁰Ne-Ion Beams Using an SOI Microdosimeter

Applied Sciences, 2022
Experimental microdosimetry along with the microdosimetric kinetic (MK) model can be utilized to predict the biological effects of ions. To predict the relative biological effectiveness (RBE) of ions and the survival fraction (SF) of human salivary gland
Sung Hyun Lee, Kota Mizushima, Shunsuke Yonai, Shinnosuke Matsumoto, Hideyuki Mizuno, Taku Nakaji, Ryosuke Kohno, Yoshiyuki Iwata, Toshiyuki Shirai, Vladimir Pan, Angela Kok, Marco Povoli, Linh T. Tran, Anatoly B. Rosenfeld, Masao Suzuki, Taku Inaniwa   +15 more
doaj   +1 more source

Linking Microdosimetric Measurements to Biological Effectiveness in Ion Beam Therapy: A Review of Theoretical Aspects of MKM and Other Models

Frontiers in Physics, 2021
Different qualities of radiation are known to cause different biological effects at the same absorbed dose. Enhancements of the biological effectiveness are a direct consequence of the energy deposition clustering at the scales of DNA molecule and cell ...
V. E. Bellinzona, V. E. Bellinzona, F. Cordoni, F. Cordoni, M. Missiaggia, M. Missiaggia, F. Tommasino, F. Tommasino, E. Scifoni, C. La Tessa, C. La Tessa, A. Attili   +11 more
doaj   +1 more source

Microdosimetry of kidney cells exposed to 243Am and X-ray irradiation [PDF]

EPJ Web of Conferences
In vitro experiments with rat kidney cells exposed to 243Am in cell culture medium show a decreasing cell viability with increasing americium concentration.
Kahle Pia, Senwitz Christian, Heller Anne, Seifert Anja, Taut Steffen, Kormoll Thomas   +5 more
doaj   +1 more source

Assessment of in vitro radiosensitivity parameters of breast cancer cells following exposure to radiotherapy hospital-based facilities [PDF]

Iranian Journal of Medical Physics, 2018
Introduction: The aim of the present study was to assess the radiosensitivity parameters for SK-BR-3 (SKBR3) breast cancer cells that could be implemented in the cutting-edge treatment planning systems (TPS) for accelerated partial-breast irradiation ...
Samaneh Babazadeh Toloti, Laleh Rafat Motavalli, Hashem Miri Hakimabad, Samira Mohammadi-Yeganeh, Eftekhar Rajab-Bolokat   +4 more
doaj   +1 more source