Research Papers: Imaging

Depth enhancement in spectral domain optical coherence tomography using bidirectional imaging modality with a single spectrometer

[+] Author Affiliations
Naresh Kumar Ravichandran, Ruchire Eranga Wijesinghe, Muhammad Faizan Shirazi, Kibeom Park, Mansik Jeon, Jeehyun Kim

Kyungpook National University, School of Electronics Engineering, College of IT Engineering, 80 Daehak-ro, Buk-gu, Daegu 41566, Republic of Korea

Woonggyu Jung

Ulsan National Institute of Science and Technology, Department of Biomedical Engineering, 50 UNIST-gil, Ulsan 44919, Republic of Korea

J. Biomed. Opt. 21(7), 076005 (Jul 11, 2016). doi:10.1117/1.JBO.21.7.076005
History: Received February 10, 2016; Accepted June 16, 2016
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Abstract.  A method for depth enhancement is presented using a bidirectional imaging modality for spectral domain optical coherence tomography (SD-OCT). Two precisely aligned sample arms along with two reference arms were utilized in the optical configuration to scan the samples. Using exemplary images of the optical resolution target, Scotch tape, a silicon sheet with two needles, and a leaf, we demonstrated how the developed bidirectional SD-OCT imaging method increases the ability to characterize depth-enhanced images. The results of the developed system were validated by comparing the images with the standard OCT configuration (single-sample arm setup). Given the advantages of higher resolution and the ability to visualize deep morphological structures, this method can be utilized to increase the depth dependent fall-off in samples with limited thickness. Thus, the proposed bidirectional imaging modality is apt for cross-sectional imaging of entire samples, which has the potential capability to improve the diagnostic ability.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Naresh Kumar Ravichandran ; Ruchire Eranga Wijesinghe ; Muhammad Faizan Shirazi ; Kibeom Park ; Mansik Jeon, et al.
"Depth enhancement in spectral domain optical coherence tomography using bidirectional imaging modality with a single spectrometer", J. Biomed. Opt. 21(7), 076005 (Jul 11, 2016). ; http://dx.doi.org/10.1117/1.JBO.21.7.076005


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