Abstract #1871
Reducing the peak SAR surrounding implanted lead tips in 3T MRI using a high-dielectric helmet former: a numerical feasibility study
Zidan Yu 1 , Sherman Xuegang Xin 1,2 , and Christopher Collins 1
1
Bernard and Irene Schwartz Center for
Biomedical Imaging, New York University School of
Medicine, New York, New York, United States,
2
Biomedical
Engineering, Southern Medical University, Guangzhou,
Guangdong, China
Due to the high likelihood for a patient implanted with
a pacemaker to take an MRI exam, and the significant
concern about the SAR around the lead tip of an
implanted pacemaker, the feasibility of employing high
permittivity materials for reducing the SAR is explored
here. The results indicated that it is promising to
reduce heating around the lead tip with use of
dielectric materials in a situation where a patient with
an implanted pacemaker undergoes an MR scan of head and
a large birdcage coil is used in transmission but a
local receive coil is used in reception.
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