Effects of axial, transverse, and oblique sample motion in FD OCT in systems with global or rolling shutter line detector
JOSA A, Vol. 25, Issue 11, pp. 2791-2802 (2008)
http://dx.doi.org/10.1364/JOSAA.25.002791
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Abstract
This study deals with effects on the interference signal caused by axial, transverse, and oblique motion in spectrometer-based Fourier-domain optical coherence tomography (FD OCT). Two different systems are compared—one with a global shutter line detector and the other with a rolling shutter. We present theoretical and experimental investigations of motion artifacts. Regarding axial motion, fringe washout is observed in both systems, and an additional Doppler frequency shift is seen in the system using a rolling shutter. In addition, both systems show the same SNR decrease as a result of a transversely and obliquely moving sample. The possibility of flow measurement by using the decrease in signal power was demonstrated by imaging 1% Intralipid emulsion flowing through a glass capillary. This research provides an understanding of the SNR degradation caused by sample motion and demonstrates the importance of fast data acquisition in medical imaging.
© 2008 Optical Society of America
OCIS Codes
(110.4500) Imaging systems : Optical coherence tomography
(170.0110) Medical optics and biotechnology : Imaging systems
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4500) Medical optics and biotechnology : Optical coherence tomography
ToC Category:
Medical Optics and Biotechnology
History
Original Manuscript: May 29, 2008
Revised Manuscript: August 21, 2008
Manuscript Accepted: August 26, 2008
Published: October 22, 2008
Virtual Issues
Vol. 4, Iss. 1 Virtual Journal for Biomedical Optics
Citation
Julia Walther, Alexander Krüger, Maximiliano Cuevas, and Edmund Koch, "Effects of axial, transverse, and oblique sample motion in FD OCT in systems with global or rolling shutter line detector," J. Opt. Soc. Am. A 25, 2791-2802 (2008)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-25-11-2791
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