Results 61 to 70 of about 483 (145)

Relative Biological Effectiveness (RBE) of Monoenergetic Protons: Comparison of Empirical and Biophysical Models

open access: yesApplied Sciences
A constant proton relative biological effectiveness (RBE) of 1.1 for tumor control is currently used in proton therapy treatment planning. However, in vitro, in vivo and clinical experiences indicate that proton RBE varies with kinetic energy and ...
Dimitris Dalalas   +5 more
doaj   +1 more source

Stochastic Microdosimetric Kinetic model for hypo-fractionated multi-ion therapy

open access: yesStochastic Microdosimetric Kinetic model for hypo-fractionated multi-ion therapy
The microdosimetric kinetic (MK) model is a biological model used to predict cell-survival fractions from the specific energy absorbed by a microscopic subnuclear structure, domain, for various radiations. The MK model has been used in clinical treatments of carbon-ion radiotherapy at NIRS.
openaire   +1 more source

Adaptation of the microdosimetric kinetic model to hypoxia

open access: yesAdaptation of the microdosimetric kinetic model to hypoxia
Ion beams present a potential advantage in terms of treatment of lesions with hypoxic regions. In order to use this potential, it is important to accurately model the cell survival of oxic as well as hypoxic cells. In this work, an adaptation of the microdosimetric kinetic (MK) model making it possible to account for cell hypoxia is presented.
openaire  

Advancement of microdosimetric kinetic model in heavy-ion radiotherapy

open access: yesAdvancement of microdosimetric kinetic model in heavy-ion radiotherapy
To date, more than 11,000 cancer patients have been treated with therapeutic carbon-ion beams at the National Institute of Radiological Sciences (NIRS). In the treatment planning system, the biological effectiveness of the therapeutic carbon-ion beams has been predicted based on the microdosimetric kinetic (MK) model.
openaire  

Adaptation of Stochastic Microdosimetric Kinetic Model for Charged-Particle Therapy Treatment Planning

open access: yesAdaptation of Stochastic Microdosimetric Kinetic Model for Charged-Particle Therapy Treatment Planning
Purpose: The microdosimetric kinetic (MK) model underestimates the cell-survival fractions for high linear energy transfer (LET) and high dose irradiations. To address the issue, the MK model was extended to the stochastic microdosimetric kinetic (SMK) model.
openaire   +1 more source

Relative biological effectiveness study of Lipiodol based on microdosimetric-kinetic model

open access: yesRelative biological effectiveness study of Lipiodol based on microdosimetric-kinetic model
Objectives: We examine the contrast agent Lipiodol effect on the relative biological effectiveness (RBE) values for flattening filter free (FFF) and flattening filter (FF) beams of 6 MV-Xray (6 MVX) and 10 MVX. Methods: Lipiodol was placed at 5 cm depth in water. According to the microdosimetric kinetic model, the RBE values for killing the human liver
openaire  

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