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[Safety considerations to avoid current-induced skin burns in MRI procedures]
1Forschungsschwerpunkt Radiologische Diagnostik und Therapie, Deutsches Krebsforschungszentrum (dkfz), Heidelberg.
Der Radiologe
|October 30, 1998
Summary
Magnetic Resonance Imaging (MRI) can cause rare skin burns due to induced electrical currents. Avoiding skin-to-skin contact in extremities prevents these rare adverse events during standard MRI scans.
Area of Science:
- Radiological safety
- Medical imaging physics
- Biomedical engineering
Background:
- Evolving safety standards in radiological procedures.
- Magnetic Resonance Imaging (MRI) utilizes strong magnetic fields and radiofrequency pulses.
- Understanding electromagnetic interactions within the human body during MRI is crucial.
Observation:
- Two cases of second- and third-degree skin burns during 1.5 Tesla MRI.
- Burns were attributed to induced electrical currents.
- An inadvertent conducting loop through extremities and trunk was identified as the cause.
Findings:
- Standard MRI protocols, even within safety guidelines, can induce electrical currents.
- These currents can lead to skin burns if a closed conducting loop is formed.
- Focal skin-to-skin contact in extremities is a key factor in loop formation.
Implications:
- Highlights a rare but serious risk associated with MRI procedures.
- Emphasizes the importance of patient positioning and awareness of potential conducting loops.
- Suggests practical measures to mitigate burn risk during MRI examinations.