Guest Dr. Karl Vigen discusses managing patient warming and heating in implants and devices as it relates to the radio frequency field. Specific topics include Specific Absorption Rate (SAR), Specific Energy Dose (SED) and B1+rms.
- Discuss SAR as it relates to tissue heating
- Explain the different SAR modes
- Explore the reasons for ‘hot spots’ in respect to the RF coil being used
- Describe SED and how it differs from SAR
- Verbalize the limits in which the MR scanner will not allow you to image the patient for 24 hours
- Define B1+rms
- Assess how B1+rms is helpful in regards to implants and Devices
The content of this Contrast Enhanced MRI Program is intended for healthcare professionals who work in the MRI environment. These individuals include MRI Technologists, Imaging Nurses, MRI Researchers, and Others.
This program has been approved for 1.00 hours of Category A CE credit as designated by the International Society for MR Radiographers and Technologists (ISMRT) RCEEM.
Release Date: 02/26/2023 | Expires: 02/27/2024
Faculty and Planner Disclosures:
In accordance with this policy, faculty and planners must disclose any financial relationships with commercial interests germane to program content. Additionally, in the event a conflict of interest (COI) does exist, it is the policy of NWIF to ensure that the COI is resolved in order to ensure the integrity of the CME/CE activity. The planner has nothing to disclose
Greenberg_ISMRM-ACR MR Safety_jmri 2020
ACR Guidance Document on MR Safe Practices: Updates and Critical Information 2019
Direct link: https://onlinelibrary.wiley.com/doi/epdf/10.1002/jmri.26880
Invisible metallic microfiber in clothing presents unrecognized MRI risk for cutaneous burn
Pietryga JA, Fonder MA, Rogg JM, North DL, Bercovitch LG
AJNR Am J Neuroradiol. 2013 May;34(5):E47-50. doi: 10.3174/ajnr.A2827. Epub 2011 Dec 15
Direct link: http://www.ajnr.org/content/ajnr/34/5/E47.full.pdf
Thermal tissue damage model analyzed for different whole-body SAR and scan durations for standard MR body coils
Murbach M, Neufeld E, Capstick M, Kainz W, Brunner D, Samaras T, Pruessmann KP, Kuster N
Magn Reson Med. 2014 Jan;71(1):421-31. doi: 10.1002/mrm.24671. Epub 2013 Feb 14
Direct link: https://onlinelibrary.wiley.com/doi/full/10.1002/mrm.24671
Unexpected magnetic resonance imaging burn injuries from jogging pants
Tokue H, Tokue A, Tsushima Y.
Radiol Case Rep. 2019 Sep 5;14(11):1348-1351. doi: 10.1016/j.radcr.2019.08.015. eCollection 2019 Nov
Direct link: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6734033/
This MRiCast episode is supported by Bracco Diagnostics Inc. through an unrestricted educational grant.