Comparison of finite-difference time-domain SAR calculations with measurements in a heterogeneous model of man

Journal Article · Tue Aug 01 00:00:00 EDT 1989 · IEEE (Institute of Electrical and Electronics Engineers) Transactions on Bio-Medical Engineering; (USA)

DOI:https://doi.org/10.1109/10.30811· OSTI ID:5470919

Spiegel, R J; Fatmi, M B; Stuchly, S S; Stuchly, M A

A finite-difference time-domain technique was used to calculate the specific absorption rate (SAR) at various sites in a heterogeneous block model of man. The block model represented a close approximation to a full-scale heterogeneous phantom model. Both models were comprised of a skeleton, brain, lungs, and muscle. Measurements were conducted in the phantom model using an implantable electric-field probe and a computer-controlled data acquisition system. The calculation and measurement of SAR distributions were compared primarily in the head (including the neck) and chest. To obtain the necessary spatial resolution with the computer model, the head and neck were modeled with approximately 105,000 cells, while 86,000 cells were used to configure the chest. Planewave fields, polarized in the E orientation, were utilized to irradiate the models at an exposure frequency of 350 MHz. Reasonable correlation existed between the calculations and measurements.

• OSTI ID: 5470919
• Journal Information: IEEE (Institute of Electrical and Electronics Engineers) Transactions on Bio-Medical Engineering; (USA), Vol. 36:8; ISSN 0018-9294
• Country of Publication: United States
• Language: English

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