Abstract #0302
What is the SAR for Routine Clinical MRI Exams at 1.5T?
Deborah Anne Langman 1 , Subashini Srinivasan 1,2 , and Daniel B Ennis 1,2
1
Radiological Sciences, UCLA, Los Angeles,
CA, United States,
2
Bioengineering,
UCLA, Los Angeles, CA, United States
Understanding the time course of RF deposition during
typical clinical exams may yield useful information for
defining testing guidelines and device performance
criteria for implanted devices. Our objective was to
retrospectively characterize and evaluate scanner
reported SAR, B1-RMS, and sequence timing for patients
undergoing routine cardiovascular or neurological MRI
exams. Our analysis of clinical cardiac exams shows that
the cumulative duration with SAR exposure >3.5 W/kg was
5-minutes of a 51-minute exam. Our analysis of clinical
neurological exams shows that the cumulative duration
with SAR exposure >2 W/kg was 10-minutes of a 30-minute
exam.
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