Predictive modelling analysis for development of a radiotherapy decision support system in prostate cancer: a preliminary study.

Kim, Kwang Hyeon; Lee, Suk; Shim, Jang Bo; Chang, Kyung Hwan; Cao, Yuanjie; Choi, Suk Woo; Jeon, Se Hyeong; Yang, Dae Sik; Yoon, Won Sup; Park, Young Je; Kim, Chul Yong

PurposeThe aim of this study is to develop predictive models to predict organ at risk (OAR) complication level, classification of OAR dose-volume and combination of this function with our in-house developed treatment decision support system.Materials and methodsWe analysed the support vector machine and decision tree algorithm for predicting OAR complication level and toxicity in order to integrate this function into our in-house radiation treatment planning decision support system. A total of 12 TomoTherapyTM treatment plans for prostate cancer were established, and a hundred modelled plans were generated to analyse the toxicity prediction for bladder and rectum.ResultsThe toxicity prediction algorithm analysis showed 91·0% accuracy in the training process. A scatter plot for bladder and rectum was obtained by 100 modelled plans and classification result derived. OAR complication level was analysed and risk factor for 25% bladder and 50% rectum was detected by decision tree. Therefore, it was shown that complication prediction of patients using big data-based clinical information is possible.ConclusionWe verified the accuracy of the tested algorithm using prostate cancer cases. Side effects can be minimised by applying this predictive modelling algorithm with the planning decision support system for patient-specific radiotherapy planning.

ALGORITHMS; BLADDER; DECISION support systems; DECISION trees; INFORMATION storage & retrieval systems; MEDICAL databases; COMPUTERS in medicine; PROSTATE tumors; RADIATION doses; RADIOTHERAPY; RECTUM; PREDICTIVE tests

Journal of Radiotherapy in Practice, 2017, Vol 16, Issue 2, p161

1460-3969

Academic Journal

10.1017/S1460396916000583