Microwave scattering parameter imagery of an isolated canine kidney
Lawrence E. Larsen, John H. Jacobi · 1979
3.9 GHz microwave radiation successfully imaged kidney structure, showing different tissues interact distinctly with EMF.
Plain English Summary
Researchers developed a microwave imaging system using 3.9 GHz radiation to create detailed pictures of a dog kidney's internal structure. The technology successfully distinguished between different kidney regions including the cortex, medulla, and collecting system. This early study explored using microwave radiation as a medical imaging tool.
Why This Matters
This 1979 study represents an important milestone in microwave imaging technology, demonstrating that 3.9 GHz radiation could penetrate biological tissue to reveal internal organ structure. While the research focused on imaging applications rather than health effects, it provides valuable data on how microwave frequencies interact with living tissue. The 3.9 GHz frequency used falls within the range of modern wireless communications, though at much higher power levels than typical consumer devices. What makes this research particularly relevant today is that it shows how microwave radiation can distinguish between different tissue types based on their electrical properties. This differential interaction suggests that various organs and tissue types may respond differently to EMF exposure, supporting the need for comprehensive safety testing across different biological systems rather than assuming uniform effects throughout the body.
Finding
The kidney images are interpreted in terms of the known anatomical and functional organization of the organ. It does appear to be possible to distinguish cortex corticis corresponding to a high proportion of proximal and distal convoluted tubules, deeper cortical layers corresponding to a high population density of glomeri, a medullary outer zone corresponding to the loops of Henle as well as the collecting system, and the region of calyces/renal pelvis.
In their words
“The kidney images are interpreted in terms of the known anatomical and functional organization of the organ. It does appear to be possible to distinguish cortex corticis corresponding to a high proportion of proximal and distal convoluted tubules, deeper cortical layers corresponding to a high population density of glomeri, a medullary outer zone corresponding to the loops of Henle as well as the collecting system, and the region of calyces/renal pelvis.”
Figures from the Original Paper
Diagrams extracted from the original research document.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{microwave_scattering_parameter_imagery_of_an_isolated_canine_kidney_g5103,
author = {Lawrence E. Larsen and John H. Jacobi},
title = {Microwave scattering parameter imagery of an isolated canine kidney},
year = {1979},
}