Results 31 to 40 of about 686 (148)

Concepts of microdosimetry [PDF]

Radiation and Environmental Biophysics, 1975
This is the first part of an investigation of microdosimetric concepts relevant to numerical calculations. The definitions of the microdosimetric quantities are reviewed and formalized, and some additional conventions are adopted. The common interpretation of the quantities in terms of energy imparted to spherical sites is contrasted with their ...
A M, Kellerer, D, Chmelevsky
openaire   +6 more sources

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

Clonogenic Survival RBE Calculations in Carbon Ion Therapy: The Importance of the Absolute Values of α and β in the Photon Dose-Response Curve and a Strategy to Mitigate Their Anticorrelation

Quantum Beam Science, 2023
The computation of the relative biological effectiveness (RBE) is a fundamental step in the planning of cancer radiotherapy treatments with accelerated ions.
Alessio Parisi, Chris J. Beltran, Keith M. Furutani   +2 more
doaj   +1 more source

Experimental design and control methods for dose rate optimization in a synchrotron-based proton therapy beamline. [PDF]

Precis Radiat Oncol
Monte Carlo modeling of the geometry and particle trajectories (100 primary proton histories) without any scatterer and with different second scatterer (made of tungsten) thicknesses. Color scheme for particles: protons – blue, electrons – red, photons – green, and neutrons – yellow.
Tang J, Liu D, Mathew J, Campelo S, Bronk L, Taylor P, Li Y, Guan F.   +7 more
europepmc   +2 more sources

Energy-Loss Straggling and Delta-Ray Escape in Solid-State Microdosimeters Used in Ion-Beam Therapy

Journal of Nuclear Engineering, 2022
Microdosimetry is increasingly adopted in the characterization of proton and carbon ion beams used in cancer therapy. Spectra and mean values of lineal energy calculated in frequency and dose are seen by many as the tools which, by complementing ...
Giulio Magrin, Sandra Barna, Cynthia Meouchi, Anatoly Rosenfeld, Hugo Palmans   +4 more
doaj   +1 more source

LET measurements in proton and helium-ion beams of therapeutic energies using a silicon pixel detector towards a tool for quality assurance. [PDF]

Med Phys
Abstract Background As advanced treatment plans increasingly include optimizing both dose and linear energy transfer (LET), there is a growing demand for tools to measure LET in clinical settings. Although various detection systems have been investigated in this pursuit, the scarcity of detectors capable of providing per‐ion data for a fast and ...
Hamad Y, Sari FK, Félix-Bautista R, Martišíková M, Mairani A, Gehrke T.   +5 more
europepmc   +2 more sources

Microdosimetry

Istituto Lombardo - Accademia di Scienze e Lettere - Rendiconti di Scienze, 2023
The interest in the application of microdosimetry for assessing the radiation quality of hadrontherapy fields has grown in the last two decades. The reference detector for microdosimetry is the tissue-equivalent proportional counter (TEPC). Novel types of microdosimeters have been developed by the Nuclear Measurement Laboratory of the Politecnico di ...
openaire   +2 more sources

Preparation of tissue equivalent conductive polyamide/polyethylene nanocomposite containing carbon nanotubes as electrode of the gaseous microdosimeters [PDF]

مجله علوم و فنون هسته‌ای, 2019
The aim of this study is preparing a conductive tissue equivalent composite similar to expensive and limited access commercial A-150 plastic, in which, the Conductive Carbon Nanotubes (CNT) are used instead of black carbon.
F Khoylou, A Akhavan, F Naimian, A Moslehi   +3 more
doaj   +1 more source

Microdosimetry test on double layer beam shaping assembly neutron beam as a boron neutron capture therapy neutron source using PHITS code [PDF]

Ядерна фізика та енергетика
A microdosimetry test on a double layer beam shaping assembly (DLBSA) neutron beam has been carried out using the particle and heavy ion transport code system (PHITS).
Bilalodin, A. Haryadi, Sehah, Zusfahair, Y. Sardjono, R. Tursinah   +5 more
doaj   +1 more source

Microdosimetry Study of Proton Quality Factor Using Analytic Model Calculations

Applied Sciences, 2022
The quality factor (Q) is formally linked to the stochastic (e.g., carcinogenic) risk of diverse ionizing radiations at low doses and/or low dose rates.
Alexis Papadopoulos, Ioanna Kyriakou, Yusuke Matsuya, Sébastien Incerti, Ioannis A. Daglis, Dimitris Emfietzoglou   +5 more
doaj   +1 more source