POINT PROBE AND ULTRASOUND TOMOGRAPHIC TECHNIQUES FOR TEMPERATURE MEASUREMENTS DURING MICROWAVE-INDUCED HYPERTHERMIA.

Douglas A. Christensen, Steven A. Johnson, R. Balasabramanian, James F Greenleaf

Research output: Contribution to conferencePaper

Abstract

The authors have developed a unique type of temperature-dependent optical sensor for deployment at the tip of the fiberoptic probe, consisting of a bulk semiconductor crystal whose optical absorption varies with temperature. The small diameter of the probe (about . 250 mm) minimizes tissue damage upon implantation. The authors have also developed a new means of noninvasive temperature mapping within the body, using ultrasound as the sensing beam. The technique is based up on the temperature-dependent velocity of sound exhibited by most biological tissues, and therefore a tomographic map of ultrasound velocity reconstructed by computerized reconstruction techniques may be related to internal organ temperatures. Precise calibration of the procedure may require the use of the invasive probes described in this paper.

Original languageEnglish (US)
Pages451-453
Number of pages3
StatePublished - Jan 1 2017
EventUnknown conference - San Diego, CA, USA
Duration: Feb 1 1978Feb 3 1978

Other

OtherUnknown conference
CitySan Diego, CA, USA
Period2/1/782/3/78

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Temperature measurement
Ultrasonics
Microwaves
Temperature
Tissue
Optical sensors
Acoustic wave velocity
Light absorption
Calibration
Semiconductor materials
Crystals

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Christensen, D. A., Johnson, S. A., Balasabramanian, R., & Greenleaf, J. F. (2017). POINT PROBE AND ULTRASOUND TOMOGRAPHIC TECHNIQUES FOR TEMPERATURE MEASUREMENTS DURING MICROWAVE-INDUCED HYPERTHERMIA.. 451-453. Paper presented at Unknown conference, San Diego, CA, USA, .

POINT PROBE AND ULTRASOUND TOMOGRAPHIC TECHNIQUES FOR TEMPERATURE MEASUREMENTS DURING MICROWAVE-INDUCED HYPERTHERMIA. / Christensen, Douglas A.; Johnson, Steven A.; Balasabramanian, R.; Greenleaf, James F.

2017. 451-453 Paper presented at Unknown conference, San Diego, CA, USA, .

Research output: Contribution to conferencePaper

Christensen, DA, Johnson, SA, Balasabramanian, R & Greenleaf, JF 2017, 'POINT PROBE AND ULTRASOUND TOMOGRAPHIC TECHNIQUES FOR TEMPERATURE MEASUREMENTS DURING MICROWAVE-INDUCED HYPERTHERMIA.' Paper presented at Unknown conference, San Diego, CA, USA, 2/1/78 - 2/3/78, pp. 451-453.
Christensen DA, Johnson SA, Balasabramanian R, Greenleaf JF. POINT PROBE AND ULTRASOUND TOMOGRAPHIC TECHNIQUES FOR TEMPERATURE MEASUREMENTS DURING MICROWAVE-INDUCED HYPERTHERMIA.. 2017. Paper presented at Unknown conference, San Diego, CA, USA, .
Christensen, Douglas A. ; Johnson, Steven A. ; Balasabramanian, R. ; Greenleaf, James F. / POINT PROBE AND ULTRASOUND TOMOGRAPHIC TECHNIQUES FOR TEMPERATURE MEASUREMENTS DURING MICROWAVE-INDUCED HYPERTHERMIA. Paper presented at Unknown conference, San Diego, CA, USA, .3 p.
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