CT radiomics-based long-term survival prediction for locally advanced non-small cell lung cancer patients treated with concurrent chemoradiotherapy using features from tumor and tumor organismal environment

Autor: Nai-Bin Chen, Mai Xiong, Rui Zhou, Yin Zhou, Bo Qiu, Yi-Feng Luo, Su Zhou, Chu Chu, Qi-Wen Li, Bin Wang, Hai-Hang Jiang, Jin-Yu Guo, Kang-Qiang Peng, Chuan-Miao Xie, Hui Liu
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Radiation Oncology, Vol 17, Iss 1, Pp 1-12 (2022)
Druh dokumentu: article
ISSN: 1748-717X
DOI: 10.1186/s13014-022-02136-w
Popis: Abstract Background Definitive concurrent chemoradiotherapy (CCRT) is the standard treatment for locally advanced non-small cell lung cancer (LANSCLC) patients, but the treatment response and survival outcomes varied among these patients. We aimed to identify pretreatment computed tomography-based radiomics features extracted from tumor and tumor organismal environment (TOE) for long-term survival prediction in these patients treated with CCRT. Methods A total of 298 eligible patients were randomly assigned into the training cohort and validation cohort with a ratio 2:1. An integrated feature selection and model training approach using support vector machine combined with genetic algorithm was performed to predict 3-year overall survival (OS). Patients were stratified into the high-risk and low-risk group based on the predicted survival status. Pulmonary function test and blood gas analysis indicators were associated with radiomic features. Dynamic changes of peripheral blood lymphocytes counts before and after CCRT had been documented. Results Nine features including 5 tumor-related features and 4 pulmonary features were selected in the predictive model. The areas under the receiver operating characteristic curve for the training and validation cohort were 0.965 and 0.869, and were reduced by 0.179 and 0.223 when all pulmonary features were excluded. Based on radiomics-derived stratification, the low-risk group yielded better 3-year OS (68.4% vs. 3.3%, p
Databáze: Directory of Open Access Journals
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