DSP seminar, Wed Feb. 15 Time and location: 4:00-5:00 PM 2269 Beckman Institute

Title: A solution of inverse scattering for optical coherence tomography


Speaker: Tyler Ralston

Graduate Student, UIUC


Abstract:

Inverse scattering theory for optical coherence tomography
(OCT) is used to resolve three-dimensional object structure, taking into account 
the finite beam width and focusing.  By using our proposed algorithm, transverse 
and axial resolution produced by conventional OCT imaging inside the confocal 
volume can be achieved outside of the confocal volume.  Numerical simulations and 
experimental implementations show that scatterers can be resolved outside of the 
confocal volume.  These results improve the high-resolution cross-sectional imaging 
capabilities of OCT.


Biography:  

Tyler S. Ralston was born in Dayton, OH in 1977.  He received his BS in electrical 
and computer engineering from the University of Dayton in 2000.  In 2004, he received 
his MS in electrical and computer engineering at the University of Illinois at 
Urbana-Champaign (UIUC). Presently, he is pursuing his PhD at the same institution.

Prior to his masters studies, he worked in the medical products sector at Battelle 
Memorial Institute in Columbus, OH, earning a 'Key Contributor' award for production 
of a medical instrument.  He holds a fellowship at the Beckman Institute for Advanced 
Science and Technology at the UIUC.  His research interests include both signal processing 
and inverse problems for optical biomedical imaging.
    
Mr. Ralston has previously served on the board for the student chapter of IEEE and is 
currently president of the student chapter of the OSA at UIUC.