Mechanistic simulation of normal-tissue damage in radiotherapy—implications for dose–volume analyses
@article{Rutkowska2010MechanisticSO, title={Mechanistic simulation of normal-tissue damage in radiotherapy—implications for dose–volume analyses}, author={Eva Rutkowska and Colin R. Baker and Alan Effraim Nahum}, journal={Physics in Medicine \& Biology}, year={2010}, volume={55}, pages={2121 - 2136} }
A radiobiologically based 3D model of normal tissue has been developed in which complications are generated when ‘irradiated’. The aim is to provide insight into the connection between dose-distribution characteristics, different organ architectures and complication rates beyond that obtainable with simple DVH-based analytical NTCP models. In this model the organ consists of a large number of functional subunits (FSUs), populated by stem cells which are killed according to the LQ model. A…
29 Citations
Mechanistic modelling of radiotherapy-induced lung toxicity.
- MedicineThe British journal of radiology
- 2012
It is shown that it is possible to make sense of the way the lung responds to radiation by modelling RP mechanistically, from cell death to tissue damage to loss of organ function.
Voxel-based analysis in radiation oncology: A methodological cookbook.
- Medicine, PhysicsPhysica medica : PM : an international journal devoted to the applications of physics to medicine and biology : official journal of the Italian Association of Biomedical Physics
- 2020
The effect of photon dose calculation algorithms on the clinical outcome of radiotherapy as assessed by radiobiological models
- Medicine, Physics
- 2012
The clinical impact of the differences in absolute doses calculated by various photon dose calculation algorithms for two clinical tumour sites was investigated and the tumour control probability (TCP) and normal tissue complication probability (N TCP) were estimated using well established bio-mathematical radiobiological models.
A Bio-Mathematical Model for Parallel Organs and its use in Ranking Radiation Treatment Plans
- MedicineTechnology in cancer research & treatment
- 2012
The proposed LQ-based parallel-organ model was found to be efficient and reliable for ranking treatment plans for the same patient and against the widely used Lyman-Kutcher-Burman model.
The performance of normal-tissue complication probability models in the presence of confounding factors.
- MedicineMedical physics
- 2015
This work shows that identifying confounding factors, and developing methods to quantify them, is more important than the choice of NTCP model.
Classification of tolerable/intolerable mucosal toxicity of head‐and‐neck radiotherapy schedules with a biomathematical model of cell dynamics
- MedicineMedical physics
- 2021
The model is based on the dynamics of proliferative and functional cells populations in irradiated mucosa, and incorporates the three A's: Accelerated proliferation, loss of Asymmetric proliferation, Abortive divisions and could prove helpful when designing unconventional dose fractionations, schedules not covered by datasets to which phenomenological models of toxicity have been fitted.
A mathematical model of dynamics of cell populations in squamous epithelium after irradiation
- BiologyInternational journal of radiation biology
- 2020
Developing multi-compartment mechanistic models of dynamics of stem and functional cell populations in epithelium after irradiation can facilitate the development of mucositis response models to nonstandard schedules/treatment combinations not covered by datasets to which phenomenological models have been fitted.
Gastro-intestinal dose-volume effects in the context of dose-volume constrained prostate radiotherapy : an analysis of data from the RADAR prostate radiotherapy trial
- Medicine, Physics
- 2016
Dose ranges providing significant cut-points tended to be consistent with those showing significant univariate regression odds-ratios (representing the probability of a unitary increase in toxicity grade per percent relative volume), which validated previously published results.
Gastrointestinal dose-histogram effects in the context of dose-volume-constrained prostate radiation therapy: analysis of data from the RADAR prostate radiation therapy trial.
- MedicineInternational journal of radiation oncology, biology, physics
- 2015
Normal tissue complication probability (NTCP) models for modern radiation therapy.
- MedicineSeminars in oncology
- 2019
Issues relevant to hypofractionated stereotactic body RT and ion beam therapy are critically reviewed and a new phenomenological approach to predict RIM is suggested.
References
SHOWING 1-10 OF 37 REFERENCES
Modeling of normal tissue response to radiation: the critical volume model.
- Medicine, PhysicsInternational journal of radiation oncology, biology, physics
- 1993
Probability of radiation-induced complications for normal tissues with parallel architecture subject to non-uniform irradiation.
- MedicineMedical physics
- 1993
A biologically based model is developed to predict radiation-induced normal tissue complication probability (NTCP) in inhomogeneously irradiated organs such as the lung or the kidney and it is demonstrated that these results for inhomogeneous irradiation reproduce those of the serial and tumor control models.
The controversies and pitfalls in modeling normal tissue radiation injury/damage.
- MedicineSeminars in radiation oncology
- 2001
The existence of the volume effect, the existence of a threshold volume, and theexistence of functional subunits are addressed; the pitfalls relate to the problems in accurate determination and application of the dose-response functions.
Practical considerations in using calculated healthy-tissue complication probabilities for treatment-plan optimization.
- Medicine, PhysicsInternational journal of radiation oncology, biology, physics
- 1999
A variable critical-volume model for normal tissue complication probability.
- Medicine, PhysicsMedical physics
- 2001
A maximum likelihood fit is used to estimate the model parameters for late-term rectal complications in a set of patients treated for prostate carcinoma with external photon beam radiotherapy (EBRT).
Organizational response of normal tissues to irradiation.
- Biology, MedicineSeminars in radiation oncology
- 2001
This paper summarizes data and the potential impact of new concepts and data in molecular radiation biology on dose volume effects in normal tissues and the effect of changing volume on normal tissue response for a large number of tissues.
Modelling the dose-volume response of the spinal cord, based on the idea of damage to contiguous functional subunits.
- PhysicsInternational journal of radiation biology
- 2001
It is demonstrated that the Contiguous Damage model predicts different responses to two-se segment irradiation and to single-segment irradiation to the same combined length as observed in experiments on rats, a result that cannot be described by the standard Critical Volume NTCP model.
Critical volume model analysis of lung complication data from different strains of mice
- BiologyInternational journal of radiation biology
- 2005
The critical volume (CV) normal tissue complication probability (NTCP) model was used to fit experimental data on radiation pneumonitis in mice to test the model and determine the values of the model…
Probability of radiation-induced complications in normal tissues with parallel architecture under conditions of uniform whole or partial organ irradiation.
- BiologyRadiotherapy and oncology : journal of the European Society for Therapeutic Radiology and Oncology
- 1993
Physical models and simpler dosimetric descriptors of radiation late toxicity.
- Medicine, PhysicsSeminars in radiation oncology
- 2007