Artículo original: Pinson C., Dolores M., et al. Magnetization transfer ratio for the assessment of perianal fistula activity in Crohn’s disease. Eur Radiology. 2017; 27:80-87. DOI: https://doi.org/10.1007/s00330-016-4350-2 Sociedad: European Society of Radiology (@myESR) Palabras clave: Crohn disease, inflammatory bowel disease,…