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• W4293765648 endingPage "110499" @default.
• W4293765648 startingPage "110499" @default.
• W4293765648 abstract "More and more small brain metastases (BMs) in asymptomatic patients can be detected even prior to their primary lung cancer with the development of MRI. The aim of this study was to develop a predictive radiomics model to identify epidermal growth factor receptor (EGFR) and anaplastic lymphoma kinase (ALK) mutation status in BM and explore the optimal MR sequence for predication.This retrospective study included 186 patients with proven BM of lung cancer (training cohort: 70 patients with EGFR mutations and 65 patients with ALK rearrangements; testing cohort: 26 patients with EGFR mutations and 25 patients with ALK rearrangements). Radiomics features were separately extracted from contrast-enhanced T1-weighted imaging (T1-CE), T2 fluid-attenuated inversion recovery (T2-FLAIR) and T2WI sequences. The model for three MR sequences were constructed using a random forest classifier. ROC curves were used to validate the capability of the models in the training and testing cohorts.The AUCs of the T2-FLAIR model were significantly higher than those of the T1-CE model in training cohort (0.991 versus 0.954) and testing cohort (0.950 versus 0.867) and much higher than those of the T2WI model in training cohort (0.991 versus 0.880) and testing cohort (0.950 versus 0.731). Besides, the F1 scores of the T1-CE model were slightly higher than the T2-FLAIR model and much higher than the T2WI model in two cohorts.T2-FLAIR and T1-CE radiomics models that can be used as noninvasive tools for identifying EGFR and ALK mutation status are helpful to guide therapeutic strategies." @default.
• W4293765648 created "2022-08-31" @default.
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• W4293765648 date "2022-10-01" @default.
• W4293765648 modified "2023-10-02" @default.
• W4293765648 title "Differentiating EGFR from ALK mutation status using radiomics signature based on MR sequences of brain metastasis" @default.
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• W4293765648 doi "https://doi.org/10.1016/j.ejrad.2022.110499" @default.
• W4293765648 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36049410" @default.
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