Optical coherence-domain imaging for biomedical applications
Speaker: Dr Andrei Zvyagin, Centre for Biophotonics and Laser Science, Physics, SPS & Biomedical Engineering,
When: 2005-05-31 11:30:00
Venue: 78-420
Host: Prof Stuart Crozier
Abstract:Optical biomedical imaging represents a cutting-edge direction in
biophotonics, where the scattering nature of biological matter and
its intricate morphology present two important challenges. These
are manifested by low-visibility features of interest on a
scattering background of the specimen fabric. The only plausible
strategy to image through the myriads of polymorphous scatterers is
to employ a mechanism that discriminates (gates) a selected
elementary volume from within the obscuring environment of the
specimen. One example of successful implementation of this gating
strategy is optical coherence tomography (OCT), which makes use of
coherence gating to produce clear images of such turbid tissues as
human skin, eye, and internal organ layers at sub-millimetre depths
in vivo. In a second example, an emerging holography-based
technique, digital Fourier microscopy, makes use of optical signal
processing to discriminate the structures of interest based on their
form-factor and refractive index.
In this seminar, Dr Zvyagin will address the enabling capacity of
advanced signal processing to meet these challenges in optical
biomedical imaging using two examples from the fields of optical
coherence tomography and digital Fourier microscopy.
Biography:Andrei Zvyagin received the Ph.D. in Engineering from the Tokyo
Institute of Technology in 1997. He joined the Optical+Biomedical
Engineering Laboratory at the University of Western Australia in
1998, as a postdoctoral fellow, where he was successful in obtaining
an Australian Postdoctoral Fellowship, Australian Research Council
(ARC) award, in 2000. In 2003, Dr Zvyagin took up a lectureship at
the Centre for Biophotonics and Laser Science, Physics, UQ. Shortly
after joining the Centre, he received an ARC Australian Research
Fellowship (ARF) award. Presently, Andrei is a Lecturer/ARF Fellow
holding a joint appointment with Physics, School of Physical
Sciences, and Biomedical Engineering, School of Information
Technology and Electrical Engineering, UQ.
Andrei's research experience is diverse, including ion-trap-based
frequency standards, ultrahigh-resolution laser spectroscopy,
near-field scanning optical microscopy, and optical coherence-domain
imaging.
Type: ITEE Seminar
Contact:Prof Stuart Crozier, seminar host (stuart@itee.uq.edu.au)
or Guido Governatori (ITEE seminar co-ordinator)
(guido@itee.uq.edu.au)