ALK and lung adenocarcinoma: In addition, several studies have been conducted on the relationship between traditional chest CT features and gene mutations of EGFR, ALK in lung adenocarcinomas.7, 8, 9, 10, 11, 12, 13, 14 As far as we know, there has been no research on the correlation of spectral CT imaging parameters and PD‐L1 expression status to date.