PMID- 22418560
OWN - NLM
STAT- MEDLINE
DCOM- 20121003
LR  - 20181023
IS  - 1094-4087 (Electronic)
IS  - 1094-4087 (Linking)
VI  - 20
IP  - 6
DP  - 2012 Mar 12
TI  - Common approach for compensation of axial motion artifacts in swept-source OCT 
      and dispersion in Fourier-domain OCT.
PG  - 6761-76
LID - 10.1364/OE.20.006761 [doi]
AB  - Swept-source optical coherence tomography (SS-OCT) is sensitive to sample motion 
      during the wavelength sweep, which leads to image blurring and image artifacts. 
      In line-field and full-field SS-OCT parallelization is achieved by using a line 
      or area detector, respectively. Thus, approximately 1000 lines or images at 
      different wavenumbers are acquired. The sweep duration is identically with the 
      acquisition time of a complete B-scan or volume, rendering parallel SS-OCT more 
      sensitive to motion artifacts than scanning OCT. The effect of axial motion on 
      the measured spectra is similar to the effect of non-balanced group velocity 
      dispersion (GVD) in the interferometer arms. It causes the apparent optical path 
      lengths in the sample arm to vary with the wavenumber. Here we propose the 
      cross-correlation of sub-bandwidth reconstructions (CCSBR) as a new algorithm 
      that is capable of detecting and correcting the artifacts induced by axial motion 
      in line-field or full-field SS-OCT as well as GVD mismatch in any Fourier-domain 
      OCT (FD-OCT) setup. By cross-correlating images which were reconstructed from a 
      limited spectral range of the interference signal, a phase error is determined 
      which is used to correct the spectral modulation prior to the calculation of the 
      A-scans. Performance of the algorithm is demonstrated on in vivo full-field 
      SS-OCT images of skin and scanning FD-OCT of skin and retina.
FAU - Hillmann, Dierck
AU  - Hillmann D
AD  - Thorlabs GmbH, Maria-Goeppert-Str. 1, 23562 Lubeck, Germany. 
      dhillmann@thorlabs.com
FAU - Bonin, Tim
AU  - Bonin T
FAU - Luhrs, Christian
AU  - Luhrs C
FAU - Franke, Gesa
AU  - Franke G
FAU - Hagen-Eggert, Martin
AU  - Hagen-Eggert M
FAU - Koch, Peter
AU  - Koch P
FAU - Huttmann, Gereon
AU  - Huttmann G
LA  - eng
PT  - Journal Article
PL  - United States
TA  - Opt Express
JT  - Optics express
JID - 101137103
SB  - IM
MH  - *Algorithms
MH  - *Artifacts
MH  - Fourier Analysis
MH  - Image Enhancement/*methods
MH  - Image Interpretation, Computer-Assisted/*methods
MH  - Motion
MH  - Reproducibility of Results
MH  - Sensitivity and Specificity
MH  - Tomography, Optical Coherence/*methods
EDAT- 2012/03/16 06:00
MHDA- 2012/10/04 06:00
CRDT- 2012/03/16 06:00
PHST- 2012/03/16 06:00 [entrez]
PHST- 2012/03/16 06:00 [pubmed]
PHST- 2012/10/04 06:00 [medline]
AID - 230221 [pii]
AID - 10.1364/OE.20.006761 [doi]
PST - ppublish
SO  - Opt Express. 2012 Mar 12;20(6):6761-76. doi: 10.1364/OE.20.006761.