October 18, 2023
Tolga Goren, Sylvain Reboux, Silvia Farcito, Bryn Lloyd and Niels Kuster, Magnetic Resonance in Medicine, online 18 October 2023; doi: 10.1002/mrm.29894
Radiofrequency (RF) exposure during magnetic resonance (MR) examination is limited by IEC 60601-2-33 to prevent thermal hazards to patients; these limits are used to derive the maximum induced field for the demonstration of MR safety of implants per ISO/TS 10974 (2018). One limit is the head-averaged specific absorption rate (SAR), for which the head extent is defined differently by MR and implant vendors.