Detection sensitivity and optimization of a phased-array system

Yu Chen; Xavier Intes; Shuoming Zhou; Chenpeng Mu; Monica J. Holboke; Arjun G. Yodh; Britton Chance

doi:10.1117/12.434492

29 June 2001 Detection sensitivity and optimization of a phased-array system

Yu Chen, Xavier Intes, Shuoming Zhou, Chenpeng Mu, Monica J. Holboke, Arjun G. Yodh, Britton Chance

Proceedings Volume 4250, Optical Tomography and Spectroscopy of Tissue IV; (2001) https://doi.org/10.1117/12.434492
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

Previous studies have suggested that the phased-array detection could achieve high sensitivity in detecting and localizing inhomogeneity embedded within turbid media by applying dual interfering sources. While the sensitivity of the phased array system will be influenced by various factors such as the source-detector configuration, the effect of noises (variation of source strength and phase, detector noise, imperfect homogeneous medium, etc.) and the modulation frequency. Analytical solutions as well as experimental data are presented to investigate the sensitivity of phased array detection using different degrees of absorption perturbation by varying the size and contrast of the absorber. Also we compare the result with the single source case under similar configuration. Different separations between two interfering sources have been compared to yield the maximum sensitivity for a typical perturbation. These results can be helpful for modifying the experimental apparatus to reach optimal detection sensitivity.

Citation Download Citation

Yu Chen, Xavier Intes, Shuoming Zhou, Chenpeng Mu, Monica J. Holboke, Arjun G. Yodh, and Britton Chance "Detection sensitivity and optimization of a phased-array system", Proc. SPIE 4250, Optical Tomography and Spectroscopy of Tissue IV, (29 June 2001); https://doi.org/10.1117/12.434492

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