Ultrasonic attenuation of myocardial tissue: Dependence on time after excision and on temperature
M. O'Donnell, J. W. Mimbs, B. E. Sobel, J. G. Miller · 1977
Heart tissue's electromagnetic properties change significantly with temperature, showing biological tissues respond differently to energy under varying conditions.
Plain English Summary
Researchers measured how ultrasound waves pass through heart muscle tissue at different temperatures and time periods after removal from animals. They found that ultrasound absorption in heart tissue decreases by about 20% as temperature increases from room temperature to body temperature. The tissue remained stable for 4 hours at cool temperatures but showed changes at warmer temperatures.
Why This Matters
While this 1977 study focuses on ultrasound rather than the radiofrequency EMF we encounter from wireless devices, it reveals important principles about how electromagnetic energy interacts with biological tissues. The finding that heart muscle tissue's response to ultrasonic waves varies significantly with temperature demonstrates how environmental factors can alter tissue properties in ways that affect energy absorption. This temperature dependence is particularly relevant for understanding EMF exposure, since our bodies generate heat during wireless device use, potentially changing how tissues absorb electromagnetic energy. The research shows that biological tissues are dynamic systems whose electromagnetic properties shift based on conditions like temperature and cellular integrity over time.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{ultrasonic_attenuation_of_myocardial_tissue_dependence_on_time_after_excision_an_g5013,
author = {M. O'Donnell and J. W. Mimbs and B. E. Sobel and J. G. Miller},
title = {Ultrasonic attenuation of myocardial tissue: Dependence on time after excision and on temperature},
year = {1977},
}