Comparative Analysis of RF Radiation Absorption in Lung and Muscle Tissue: A Study on Specific Absorption Rate (SAR)

Modern technology uses radiofrequency (RF) radiation, hence its effects on biological tissues must be understood. This work uses a laboratory radio frequency signal transmitter and receiver to measure goat lung and muscle RF absorption at 2.45 GHz. The results show that at different angles of exposure, lung tissue absorbs RF waves at a far faster rate than muscle tissue. Lung tissue has a greater capacity to absorb and attenuate RF radiation, as seen by the continuously lower power values at the receiver in data acquired by MATLAB analysis. Lung tissue's high moisture content and porous structure, which promote its interaction with RF energy, are the unique structural components that cause this phenomenon. Muscle, on the other hand, has a denser and more fibrous structure, which means that it lets more radio frequency radiation flow through and hence has a greater received power. Lung tissue's sensitivity to radiofrequency (RF) exposure is shown by the Specific Absorption Rate (SAR) plots, which show clear peaks at certain angles, especially at 90° and 270°. Muscle tissue shows stronger RF absorption, while lung tissue exhibits a modest positive correlation with the baseline, highlighting their distinct absorption patterns. In medical imaging and therapeutics, where different tissues react differently to RF radiation, these results highlight the importance of considering safety and health criteria in RF exposure scenarios.