TY - JOUR IS - 1 JO - Radiology PY - 2001 SN - 0033-8419 VL - 219 AU - Shellock FG DO - 10.1148/radiology.219.1.r01ap49294 LA - en N1 - FEMU ID: 9306; EMF-Portal URL: https://www.emf-portal.org/en/article/9306 SP - 294-295 TI - MR imaging and electronically activated devices ER -