3Kanal E, Barkovich A J, Bell C, et al. ACR guidance document for safe MR practices: 2007. A JR, 2007, 188:1447-1474.
4Knopp MV, Essig M, Debus J, et al. Unusual bums of the lower extremities caused by a closed conducting loop in a patient at MR imaging. Radiology, 1996, 200:572-575.