KIT and gastrointestinal stromal tumor: They collected arterial phase, venous phase, delayed phase and tri-phase combined data from contrast-enhanced CT images of 106 GIST patients, selected features with LASSO regression and GLM and then constructed a classifier using multivariate LR; the classifier showed an accuracy of 0.808 in distinguishing GIST patients with or without mutations in exon 11 of c-kit gene.