Prediction of high Ki-67 proliferation index of gastrointestinal stromal tumors based on CT at non-contrast-enhanced and different contrast-enhanced phases. - Xie, Zhenhui; Suo, Shiteng; Zhang, Wang; Zhang, Qingwei; Dai, Yongming; Song, Yang; Li, Xiaobo; Zhou, Yan (European Radiology, 2024)