A study of antenna efficiency and MRI compatibility of cardiac stent

Abstract

Implantable stents can be used as radiation antennas for wireless communication of cardiovascular health monitoring data. However, such stent can also lead to RF induced heating during MRI procedure. In this paper, we investigate the effect of different stent size on the antenna radiation performance as well as its RF induced heating during MRI procedure. Preliminary investigations show that longer stent typically yields to better radiation efficiency but suffers from higher temperature rises.

Module for visual control of in vitro results of the joint impact of climatic and electromagnetic factors on living tissue

“…Thus, comprehensive study of effects induced by combinations of different factors (temperature, humidity, EMF) is required [12]- [16]. A human organism consists of water mostly (intracellular fluid, extracellular fluid, blood, lymph).…”

“…Protein is an important component of a living organism (the building material of the whole body). Different experiments investigating EMF exposure and thermal effect on living cells are carried out [13]- [16], [18].…”

“…Papers [13]- [16] examined the effect of radio frequencies and microwaves on the cell proliferation and the formation of heat shock protein at different temperatures. It has been found that these factors have different effects on protein [18].…”

“…It will help to evaluate the role of temperature in the potential biological effects associated with EMF exposure [13]- [16], [20]. Besides, maintenance of physiological level of temperature will eliminate the thermal effect, thus, providing comprehensive examination of peculiarities of non thermal effects.…”