NDLI: Biological Effect of 27.12-MHz Short-Wave Diathermic Heating in Experimental Tumors

Content Provider	IEEE Xplore Digital Library
Author	Overgaard, J.
Copyright Year	1963
Description	Twelve isologous experimental mouse tumors of different origin, degree of differentiation, and histology have been treated with short-wave diathermy (27.12 MHz) in the temperature range 41-43/spl deg/C. All heated tumors react clinically in a similar way with shrinkage and hardened consistency of the palpable tumor. Local control was normally obtained after a certain minimum threshold heat dose, but the curability varied in different tumors from 9 to 25 percent. By lower heat doses usually no control was obtained, but a slight variation in heat sensitivity exists. Higher heat doses did normally not improve the curative results but deviations under special conditions were observed. A mutual variability of temperature and heating time without alteration in biological effect was observed. Histologic examination of heated tumors showed local destruction of the tumor core in all cases. However, in some of the tumors unaffected tumor cells were observed in the periphery of the treatment field and resulted in regrowth of tumor. Therefore, the quantitative curative results were varying for the different tumors after identical hyperthermic treatments. This may be explained by a technical insufficiency of the Iocal diathermy. Such treatment will, at tumors characterized by a high peripheral blood flow and intense infiltrative growth, often be insufficient due to a heterogeneous heating of these peripheral cells. A correlation between the degree of peripheral infiltrative growth and cure rate was found. No other relationship was established between the curative effect of hyperthermia and tumor characteristic parameters.
Sponsorship	IEEE Microwave Theory and Techniques Society
Starting Page	523
Ending Page	529
Page Count	7
File Size	665489
File Format	PDF
ISSN	00189480
Volume Number	26
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1978-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heating Neoplasms Temperature control Hyperthermia Mice Temperature distribution Temperature sensors Tumors Blood flow Heat treatment
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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