Computed SAR and thermal elevation in a 0.25-mm 2-D model of the human eye and head in response to an implanted retinal stimulator - Part II: Results

被引：27

作者：

Lazzi, G ^{[1
]}

DeMarco, SC

Liu, WT

Weiland, JD

Humayun, MS

机构：

[1] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA

[2] Univ So Calif, Doheny Eye Inst, Los Angeles, CA 90089 USA

来源：

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2003年 / 51卷 / 09期

基金：

美国国家科学基金会; 美国国家卫生研究院;

关键词：

age-related macular degeneration; finite-difference time domain (FDTD); retina prosthesis; retinitis pigmentosa; specific absorption rate (SAR); stimulator IC; temperature; thermal simulation;

D O I：

10.1109/TAP.2003.816394

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This is the second of a series of two papers on the thermal increase in the human eye and head in response to an implanted retinal stimulator. This paper provides specific absorption rates induced in the human head by the extraocular unit and the temperature increases associated with induced electromagnetic fields and power dissipation of the implanted microchip. Results are provided for different assumptions about choroid blood now. It is shown that computed results associated with the power dissipation of the implanted microchip, corresponding to temperature increases of approximately 0.6 degreesC in the midvitreous of the eye and 0.2 degreesC in the retina, closely parallel in-vivo experimental results in animals.

引用

页码：2286 / 2295

页数：10