Predicting microvascular invasion in solitary hepatocellular carcinoma: a multi-center study integrating clinical, MRI assessments, and radiomics indicators - Jian, Wang; Zhan, Lin; Zhaowang, Lin; Ling, Yang; Min, Yu; Rong, Xie; Wanxing, Lin; Yongfei, Yang; Haibin, Tu (Frontiers in Oncology, 2025)