Multifrequency Multiparameter Magnetic Resonance Elastography Applied to an In Vivo Porcine Model for Assessing Portal Hypertension. - Du, Bai; Qi, Xiaolong; Ma, Yujia; Pan, Chen; Wu, Qijun; Niu, Meng; Shi, Yu (Portal Hypertension & Cirrhosis, 2026)