27 February 2018 Radiomic biomarkers from PET/CT multi-modality fusion images for the prediction of immunotherapy response in advanced non-small cell lung cancer patients
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Abstract
Purpose: Investigate the ability of using complementary information provided by the fusion of PET/CT images to predict immunotherapy response in non-small cell lung cancer (NSCLC) patients. Materials and methods: We collected 64 patients diagnosed with primary NSCLC treated with anti PD-1 checkpoint blockade. Using PET/CT images, fused images were created following multiple methodologies, resulting in up to 7 different images for the tumor region. Quantitative image features were extracted from the primary image (PET/CT) and the fused images, which included 195 from primary images and 1235 features from the fusion images. Three clinical characteristics were also analyzed. We then used support vector machine (SVM) classification models to identify discriminant features that predict immunotherapy response at baseline. Results: A SVM built with 87 fusion features and 13 primary PET/CT features on validation dataset had an accuracy and area under the ROC curve (AUROC) of 87.5% and 0.82, respectively, compared to a model built with 113 original PET/CT features on validation dataset 78.12% and 0.68. Conclusion: The fusion features shows better ability to predict immunotherapy response prediction compared to individual image features.
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Wei Mu, Wei Mu, Jin Qi, Jin Qi, Hong Lu, Hong Lu, Matthew Schabath, Matthew Schabath, Yoganand Balagurunathan, Yoganand Balagurunathan, Ilke Tunali, Ilke Tunali, Robert James Gillies, Robert James Gillies, } "Radiomic biomarkers from PET/CT multi-modality fusion images for the prediction of immunotherapy response in advanced non-small cell lung cancer patients ", Proc. SPIE 10575, Medical Imaging 2018: Computer-Aided Diagnosis, 105753S (27 February 2018); doi: 10.1117/12.2293376; https://doi.org/10.1117/12.2293376
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