Keywords: Safety, Safety, Electromagnetic Tissue Properties, SAR
Motivation: To enable real-time SAR monitoring in MRI examinations, particularly when numerical simulations are not feasible.
Goal(s): This work aimed to explore the feasibility of obtaining subject-specific image-based SAR maps directly from conventional MRI sequences in vivo.
Approach: The tissue electrical conductivities were characterized using an MRI phase-based electrical properties tomography approach, and the electric field distribution was measured by applying Ampère's law on the B1 field obtained from B1 mapping.
Results: Subject-specific image-based SAR maps can be obtained from conventional MRI data. Median electrical conductivity values and retrieved SAR maps qualitatively agreed with existing literature.
Impact: We analyze the feasibility of obtaining in vivo subject-specific image-based SAR maps directly from conventional MRI data. The electrical conductivity is obtained through electrical properties tomography (EPT) and the E-field is estimated from the B1 field.
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