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Patient inclusion and exclusion criteria flow chart. T1w, T1-weighted; CE, contrast-enhanced; NE, non-contrast-enhanced; FLAIR, non-contrast axial-fluid-attenuated inversion recovery; CUP, cancer of unknown primary; NSCLC, non-small cell lung cancer; SCLC, small cell lung cancer; ER, estrogen receptor; PR, progesterone receptor; HER2, human epidermal growth factor receptor 2.
