[MOS] Lihong V. Wang, Texas A&M University, November 23, 2004

[Vinnie Russo]

Dear Colleagues,

The G.R. Harrison Spectroscopy Laboratory and the Department of Electrical 
Engineering and Computer Science would like to invite you to the next 
seminar in our series on Modern Optics and Spectroscopy.


Date & Time:            Tuesday, November 23, 12 noon - 1 PM
Location:               Grier Room (34-401)
Speaker:                Lihong V. Wang, Texas A&M University
Title:                  Photonic imaging in biological tissue

Refreshments will be served following the talk.

Abstract:
Lihong V. Wang, Texas A&M University
Photonic imaging in biological tissue
We develop novel biophotonic tomography for early-cancer detection and 
functional imaging by physically combining non-ionizing electromagnetic and 
ultrasonic waves.  Unlike ionizing x-ray radiation, non-ionizing 
electromagnetic waves, such as optical and radio waves, pose no health 
hazard and, at the same time, reveal new contrast 
mechanisms.  Unfortunately, electromagnetic waves in the non-ionizing 
spectral range do not penetrate biological tissue in straight 
paths.  Consequently, high-resolution tomography based on non-ionizing 
electromagnetic waves alone is limited to superficial imaging within about 
one transport mean free path (~1 mm) into biological tissues.  Ultrasonic 
imaging, on the contrary, furnishes good image resolution but has strong 
speckle artifacts as well as poor contrast in early-stage tumors.  We have 
developed ultrasound-mediated imaging modalities by combining 
electromagnetic and ultrasonic waves synergistically to overcome the above 
problems.  The hybrid modalities yield speckle-free images of high 
electromagnetic contrast at high ultrasonic resolution in relatively large 
volumes of biological tissues.

Vinnie Russo * vrusso at mit.edu  *  Office Manager
MIT; G.R. Harrison  Spectroscopy Laboratory
77 Mass. Ave., 6-014  *  Cambridge, MA  02139
(v) 617-253-9774  *  (f) 617-253-4513 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.mit.edu/pipermail/mos/attachments/20041118/20dad0a6/attachment.htm