Abstract #1875
Is Pacemaker Lead-Tip Heating Greater at 1.5T or 3T?
Deborah Anne Langman 1 , Eric Aliotta 1,2 , Dan Margolis 1 , J. Paul Finn 1,2 , and Daniel B Ennis 1,2
1
Radiological Sciences, UCLA, Los Angeles,
CA, United States,
2
Biomedical
Physics IDP, UCLA, Los Angeles, CA, United States
3T MRI exams for patients with pacemakers and ICDs is
contraindicated, largely due to concerns that lead-tip
heating is worse at 3T. Our objective was to
characterize in vitro pacemaker lead-tip heating during
a range of 3T MRI exams compared to 1.5T. 3T lead-tip
heating was found to be lower than 1.5T lead-tip heating
near the center of the B1-coil and higher near the
periphery, whereas for 1.5T the highest heating was near
the center of the B1-coil. Our reluctance to scan
patients with pacemakers or ICDs at 3T may be misguided
under some conditions and deserves greater
consideration.
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