Izvorni znanstveni članak
https://doi.org/10.31534/engmod.2018.1-2.si.01_bdny
Numerical comparison of compound and extracted eye models for high frequency dosimetry
Mario Cvetković
orcid.org/0000-0003-4889-7796
; Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Split, CROATIA
Hrvoje Dodig
orcid.org/0000-0001-7910-9583
; Faculty of Maritime Studies, University of Split, Split, CROATIA
Dragan Poljak
orcid.org/0000-0003-1205-4842
; Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Split, CROATIA
Sažetak
This paper compares the numerical results for the induced electric field, the specific absorption rate (SAR), and the corresponding temperature increase in two detailed models of the human eye. The first model features the human eye placed in the free space, while the second one incorporates the eye model in the realistic head model obtained from the magnetic resonance imaging (MRI) scans. The electromagnetic model is based on the hybrid FEM/BEM formulation for the biological tissue, whereas the thermal dosimetry model is based on the bioheat equation solved by using the finite element method. The preliminary analysis showed a similar distribution of the induced electric field along the pupillary axis obtained in both models, however, the numerical results for the SAR and related temperature increase showed discrepancy between the two models, which can be attributed to the high values of induced field in the corneal and scleral regions obtained in the compound eye model.
Ključne riječi
boundary element method; electromagnetic model; finite element method; human eye; hybrid method; thermal dosimetry model
Hrčak ID:
206307
URI
Datum izdavanja:
7.9.2018.
Posjeta: 1.741 *