International Journal of Radiation Research

en Optimizing the neural network training algorithm in predicting kerma in mammography Radiation Biology Radiation Biology تحقيق بديع Original Research <div style="text-align: justify;">Background: In regard to the enhanced use of mammography screening tests for screening breast cancer, some concerns on the enhancement of the patient's absorbed dose have increased as well. Therefore, the assessment of the patient's dose before mammography is very important, and being aware of the dose level by its estimation can be helpful before radiation. Materials and Methods: To this end, an artificial neural network (ANN) was used in this study to estimate the entrance surface air kerma (ESAK). A phantom with similar characteristics of the breast tissue was also used to collect the required data and the network was trained using some measurable parameters. To conduct the current research, multilayer perceptron (MLP) neural network architecture with training algorithms of LMBP, SCGBP, Rprop, BFGS, and GDBP, as well as radial basis function (RBF) neural network were used. Results: The results show that the neural network with BFGS training algorithm and 38 hidden layer neurons has the best performance with 7.40% root mean square error (RMSE) and coefficient of determination (R2) was obtained as 0.91. Conclusion: According to the results of this study, there is a good correlation between the estimated network output and the measured values of the ESAK. The present method will remove the limitations and costs associated with the preparation process of dosimeter instruments.</div> Breast mammography screening, entrance surface air kerma estimation, MLP neural network, RBF neural network. 665 670 http://ijrr.com/browse.php?a_code=A-10-1-961&slc_lang=en&sid=1 M. Nabipour 7900319475328460022148 7900319475328460022148 No Biomedical Engineering and Medical Physics Department, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran M.R. Deevband mdeevband@sbmu.ac.ir 7900319475328460022149 7900319475328460022149 Yes Biomedical Engineering and Medical Physics Department, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran A. Asgharzadeh Alvar 7900319475328460022150 7900319475328460022150 No Biomedical Engineering and Medical Physics Department, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran N. Soleimani 7900319475328460022151 7900319475328460022151 No School of Medicine, Golestan University of Medical Sciences, Gorgan, Iran