ArticleComputational and mathematical methods in medicine2012
The HYP-RT hypoxic tumour radiotherapy algorithm and accelerated repopulation dose per fraction study.
Article in Computational and mathematical methods in medicine, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Impact of different biologically-adapted radiotherapy strategies on tumor control evaluated with a tumor response model.PloS one · 2018Article
- Simulation of head and neck cancer oxygenation and doubling time in a 4D cellular model with angiogenesis.Scientific reports · 2017Article
- Tumour repopulation and the role of abortive division in squamous cell carcinomas during chemotherapy.Cell proliferation · 2014Article
- Altered fractionation outcomes for hypoxic head and neck cancer using the HYP-RT Monte Carlo model.The British journal of radiology · 2013Article
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3 authors.
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Abstract
The HYP-RT model simulates hypoxic tumour growth for head and neck cancer as well as radiotherapy and the effects of accelerated repopulation and reoxygenation. This report outlines algorithm design, parameterisation and the impact of accelerated repopulation on the increase in dose/fraction needed to control the extra cell propagation during accelerated repopulation. Cell kill probabilities are based on Linear Quadratic theory, with oxygenation levels and proliferative capacity influencing cell death. Hypoxia is modelled through oxygen level allocation based on pO(2) histograms. Accelerated repopulation is modelled by increasing the stem cell symmetrical division probability, while the process of reoxygenation utilises randomised pO(2) increments to the cell population after each treatment fraction. Propagation of 10(8) tumour cells requires 5-30 minutes. Controlling the extra cell growth induced by accelerated repopulation requires a dose/fraction increase of 0.5-1.0 Gy, in agreement with published reports. The average reoxygenation pO(2) increment of 3 mmHg per fraction results in full tumour reoxygenation after shrinkage to approximately 1 mm. HYP-RT is a computationally efficient model simulating tumour growth and radiotherapy, incorporating accelerated repopulation and reoxygenation. It may be used to explore cell kill outcomes during radiotherapy while varying key radiobiological and tumour specific parameters, such as the degree of hypoxia.
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