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 IJMPCERO  Vol.7 No.2 , May 2018
Influence of Distinct Radiotherapy Techniques to Induce Second Cancer Risks in Left Breast Cancer
Abstract: Influence of distinct radiotherapy techniques to induce second cancer risks in left breast cancer. Material and methods: Ten female patients with intact left breast cancer. Two treatment plans for each patient: 1) two tangential beams 3D-Conformal radiotherapy, 2) intensity-modulated radiotherapy (IMRT) plan. Estimation of second cancer risk from Organ equivalent dose models (OEDs) in three dose-response model for organs at risk in left breast cases. Results: The P-value for OED models in 3D-IMRT for left lung, both lung, heart, right lung, right breast, thyroid, liver and spinal cord in linear dose model was 0.016, 0.005, 0.019, 3.95E-06, 5.79E-07, 0.003, 1.78E-10 and 0.000206475 respectively, for linear exponential dose model 0.0577, 0.024, 0.031, 3.40E-06, 3.28E-07, 0.003, 2.01E-10 and 0.000120072 respectively and in plateau dose model 0.088, 0.042, 0.039, 3.18E-06, 2.53E-07, 0.003, 2.27E-10 and 9.00535E-05 respectively. Conclusion: organ equivalent dose models for organs at risk increasing in IMRT than tangential beams.
Cite this paper: Elgendy, R. , Attia, W. , Attalla, E. and Elnaggar, M. (2018) Influence of Distinct Radiotherapy Techniques to Induce Second Cancer Risks in Left Breast Cancer. International Journal of Medical Physics, Clinical Engineering and Radiation Oncology, 7, 193-202. doi: 10.4236/ijmpcero.2018.72017.
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