Hardware and software requirements of clinical DAT

Michael Anbar; Lorin Milescu

doi:10.1117/12.354498

26 July 1999 Hardware and software requirements of clinical DAT

Michael Anbar, Lorin Milescu

Proceedings Volume 3698, Infrared Technology and Applications XXV; (1999) https://doi.org/10.1117/12.354498
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Dynamic area telethermometry (DAT) is aimed at extracting pertinent information on the mechanism underlying periodic changes in temperature of surfaces, manifested in modulation of their IR emission. Such changes occur on human skin as a result of modulation of perfusion due to cardiogenic hemodynamics or neuronal control of blood flow through the vasculature. Clinical applications of DAT involve identification of areas of skin that how abnormal dynamic behavior. Periodic physiological changes in skin temperature range between 10 and 50 mK. Pathological changes in skin temperature dynamics are of the same order. Consequently, clinical uses of DAT require not only high sensitivity and spatial thermal resolution but also a high degree of temporal stability of both the offset and NEDT values of each detector element of the FPA. DAT also requires high rates of data acquisition to allow sufficient resolution of the frequency spectrum of skin's temperature modulation. Adequate DAT studies involve accumulation of 2048 images at a rate of 100 Hz. We found that QWIP cameras meet DAT's requirements of sensitivity, stability and accumulation rate. A single DAT study using a 256 X 256 array yields 256 MB of IR flux or temperature data for subsequent analysis. Interpretation of such an enormous amount of digital information within a reasonable timeframe poses severe software requirements, which have been met.

Citation Download Citation

Michael Anbar and Lorin Milescu "Hardware and software requirements of clinical DAT", Proc. SPIE 3698, Infrared Technology and Applications XXV, (26 July 1999); https://doi.org/10.1117/12.354498

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