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An Experimental Study of Diathermy, IV. Evidence for the Penetration of High Frequency Currents Through the Living Body.

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By CHRISTIE RONALD V., BINGER CARL A. L..  (Four. of Exper. Med.. , November1 , 1927..)

Ann Intern Med. 1927;1(5):356-357. doi:10.7326/0003-4819-1-5-356_2
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In this fourth paper on an experimental study of diathermy the principles governing the passage of high frequency currents through various conductors are discussed and exemplified in the experiments done on both non-living and living bodies. It is shown that the current takes the path of least electrical resistance rather than the shortest path, and the maximal heating occurs at the point of greatest concentration of the lines of the current flow. In a homogeneous medium with parallel electrodes maximal heat production occurs in those portions of the medium adjoining the electrodes and the heat gradient is from without inward. Under



diathermy ; frequency

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