Radial waveguide rf exposure device for hippocampal slice cultures and neurospheres

摘要

Due to its rotational field symmetry, the radial waveguide is the most suited exposure device to investigate possible effects of radio frequency (rf) signals on many biological samples at a time, e.g. of mobile communication signals (GSM and UMTS) on hippocampal slice cultures and neurospheres as in the present case. A new concept is used to expose the desired high number of specimen in the same incubator, namely double-stacked radial waveguides. The maximum specific absorption rate (SAR) of 2 W/kg for e.g. 72 hippocampal slices is obtained at a generator power of approx. 10 W.