Ludwig DR, Fraum TJ, Ballard DH, Narra VR, et al. Imaging Biomarkers of Hepatic Fibrosis: Reliability and Accuracy of Hepatic
Periportal Space Widening and Other Morphologic Features on MRI. AJR Am J Roentgenol 2021 Mar 17:1-11. doi: 10.2214/AJR.20.23099.
PMID: 33729883