Freehand OCT with real-time lateral motion tracking

Xuan Liu; Yong Huang; Peter Gehlbach; Jin U. Kang

doi:10.1117/12.2006973

Freehand OCT with real-time lateral motion tracking

Xuan Liu, Yong Huang, Peter Gehlbach, Jin U. Kang

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Freehand optical coherence tomography (OCT) systems without mechanical scanners can offer greater freedom to access and image sites of interest. However, the scanning velocity during freehand scan is irregular; therefore pseudo B-scan images obtained by stacking sequentially acquired A-scans have a non-uniform spatial sampling rate in the lateral dimension. In this study, we developed a speckle decorrelation method to estimate lateral displacement between sequentially acquired A-scans and used the information extracted from speckle analysis to correct the time-varying lateral scanning speed. We applied this method to a handheld OCT probe and performed calibration experiments to validate our model. Furthermore we demonstrated distortion-free, freehand OCT imaging of various samples including human tissue, in vivo.

Original language	English (US)
Title of host publication	Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII
Volume	8571
DOIs	https://doi.org/10.1117/12.2006973
State	Published - May 22 2013
Externally published	Yes
Event	Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII - San Francisco, CA, United States Duration: Feb 4 2013 → Feb 6 2013

Other

Other	Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII
Country/Territory	United States
City	San Francisco, CA
Period	2/4/13 → 2/6/13

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Atomic and Molecular Physics, and Optics
Radiology Nuclear Medicine and imaging

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10.1117/12.2006973

Cite this

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title = "Freehand OCT with real-time lateral motion tracking",

abstract = "Freehand optical coherence tomography (OCT) systems without mechanical scanners can offer greater freedom to access and image sites of interest. However, the scanning velocity during freehand scan is irregular; therefore pseudo B-scan images obtained by stacking sequentially acquired A-scans have a non-uniform spatial sampling rate in the lateral dimension. In this study, we developed a speckle decorrelation method to estimate lateral displacement between sequentially acquired A-scans and used the information extracted from speckle analysis to correct the time-varying lateral scanning speed. We applied this method to a handheld OCT probe and performed calibration experiments to validate our model. Furthermore we demonstrated distortion-free, freehand OCT imaging of various samples including human tissue, in vivo.",

author = "Xuan Liu and Yong Huang and Peter Gehlbach and Kang, {Jin U.}",

year = "2013",

month = may,

day = "22",

doi = "10.1117/12.2006973",

language = "English (US)",

isbn = "9780819493408",

volume = "8571",

booktitle = "Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII",

note = "Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII ; Conference date: 04-02-2013 Through 06-02-2013",

}

Liu, X, Huang, Y, Gehlbach, P & Kang, JU 2013, Freehand OCT with real-time lateral motion tracking. in Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII. vol. 8571, 85711P, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII, San Francisco, CA, United States, 2/4/13. https://doi.org/10.1117/12.2006973

TY - GEN

T1 - Freehand OCT with real-time lateral motion tracking

AU - Liu, Xuan

AU - Huang, Yong

AU - Gehlbach, Peter

AU - Kang, Jin U.

PY - 2013/5/22

Y1 - 2013/5/22

N2 - Freehand optical coherence tomography (OCT) systems without mechanical scanners can offer greater freedom to access and image sites of interest. However, the scanning velocity during freehand scan is irregular; therefore pseudo B-scan images obtained by stacking sequentially acquired A-scans have a non-uniform spatial sampling rate in the lateral dimension. In this study, we developed a speckle decorrelation method to estimate lateral displacement between sequentially acquired A-scans and used the information extracted from speckle analysis to correct the time-varying lateral scanning speed. We applied this method to a handheld OCT probe and performed calibration experiments to validate our model. Furthermore we demonstrated distortion-free, freehand OCT imaging of various samples including human tissue, in vivo.

AB - Freehand optical coherence tomography (OCT) systems without mechanical scanners can offer greater freedom to access and image sites of interest. However, the scanning velocity during freehand scan is irregular; therefore pseudo B-scan images obtained by stacking sequentially acquired A-scans have a non-uniform spatial sampling rate in the lateral dimension. In this study, we developed a speckle decorrelation method to estimate lateral displacement between sequentially acquired A-scans and used the information extracted from speckle analysis to correct the time-varying lateral scanning speed. We applied this method to a handheld OCT probe and performed calibration experiments to validate our model. Furthermore we demonstrated distortion-free, freehand OCT imaging of various samples including human tissue, in vivo.

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DO - 10.1117/12.2006973

M3 - Conference contribution

AN - SCOPUS:84877855880

SN - 9780819493408

VL - 8571

BT - Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII

T2 - Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVII

Y2 - 4 February 2013 through 6 February 2013

ER -

Freehand OCT with real-time lateral motion tracking

Abstract

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