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* Corresponding author 1 MOISE - Modelling, Observations, Identification for Environmental Sciences Inria Grenoble - Rhône-Alpes, LJK - Laboratoire Jean Kuntzmann, INPG - Institut National Polytechnique de Grenoble 2 CRAN - Centre de Recherche en Automatique de Nancy 3 BIGS - Biology, genetics and statistics Inria Nancy - Grand Est, IECL - Institut Élie Cartan de Lorraine 4 Probabilités et statistiques IECL - Institut Élie Cartan de Lorraine

Abstract : This paper deals with the lifespan modeling of heterogenous tumors treated by radiotherapy. A bi-scale model describing the cell and tumor lifespans by random variables is proposed. First and second-order moments, as well as the cumulative distribution functions and confidence intervals are expressed for the two lifespans with respect to the model parameters. One interesting result is that the mean value of the tumor lifespan can be approached by a logarithmic function of the initial cancer cell number. Moreover, we show that TCP and NTCP, used in radiotherapy to evaluate, optimize and compare treatment plans, can be derived from the tumor lifespan and the surrounding healthy tissue respectively. Finally, we propose a ROC curve, entitled ECT Efficiency-Complication Trade-off, suited to the selection by clinicians of the appropriate treatment planning.

Keywords : Markov chain cancer cells radiotherapy





Autor: Roukaya Keinj - Thierry Bastogne - Pierre Vallois -

Fuente: https://hal.archives-ouvertes.fr/



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