Microwave radiometric signatures of temperature anomalies in tissue

Patrick Kelly; Tamara Sobers; Benjamin St. Peter; Paul Siqueira; Geoffrey Capraro M.D.

doi:10.1117/12.910785

3 March 2012 Microwave radiometric signatures of temperature anomalies in tissue

Patrick Kelly, Tamara Sobers, Benjamin St. Peter, Paul Siqueira, Geoffrey Capraro M.D.

Proceedings Volume 8313, Medical Imaging 2012: Physics of Medical Imaging; 831368 (2012) https://doi.org/10.1117/12.910785
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

Because of its ability to measure the temperature-dependent power of electromagnetic radiation emitted from tissue down to several centimeters beneath the skin, microwave radiometry has long been of interest as a means for identifying the internal tissue temperature anomalies that arise from abnormalities in physiological parameters such as metabolic and blood perfusion rates. However, the inherent lack of specificity and resolution in microwave radiometer measurements has limited the clinical usefulness of the technique. The idea underlying this work is to make use of information (assumed to be available from some other modality) about the tissue configuration in the volume of interest to study and improve the accuracy of anomaly detection and estimation from radiometric data. In particular, knowledge of the specific anatomy and the properties of the overall measurement system enable determination of the signatures of localized physiological abnormalities in the radiometry data. These signatures are used to investigate the accuracy with which the location of an anomaly can be determined from radiometric measurements. Algorithms based on matches to entries in a signature dictionary are developed for anomaly detection and estimation. The accuracy of anomaly identification is improved when the coupling of power from the body to the sensor is optimized. We describe the design of a radiometer waveguide having dielectric properties appropriate for biomedical applications.

Citation Download Citation

Patrick Kelly, Tamara Sobers, Benjamin St. Peter, Paul Siqueira, and Geoffrey Capraro M.D. "Microwave radiometric signatures of temperature anomalies in tissue", Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 831368 (3 March 2012); https://doi.org/10.1117/12.910785

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available