학술논문
Sensitivity of the transfer function of a helix lead on the dielectric properties of the surrounding media: A case study
Document Type
Conference
Author
Source
2017 IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS) Microwaves, Antennas, Communications and Electronic Systems (COMCAS), 2017 IEEE International Conference on. :1-6 Nov, 2017
Subject
Language
Abstract
In this case study of radio frequency (RF) induced heating of tissue near the lead tip we show how the RF-induced power deposition (P) and the lead electromagnetic model (LEM) depend on the presence of heterogeneous tissues around the lead tip. For most clinically relevant lead lengths, we observed a visible non-linear dependence of P on a small volume of a different tissue surrounding the lead tip, (e.g. a fatty pocket). Thus, using LEMs derived in a homogeneous media can result in large systematic errors in predicting P, and consequently the lead tip heating, of active implantable medical devices (AIMDs) inside the human body.