Research Papers: General

Deformation-induced speckle-pattern evolution and feasibility of correlational speckle tracking in optical coherence elastography

[+] Author Affiliations
Vladimir Y. Zaitsev, Lev A. Matveev, Valentin M. Gelikonov

Institute of Applied Physics of the Russian Academy of Sciences, 46 Uljanova Street, Nizhny Novgorod 603950, Russia

Nizhny Novgorod State University, 23 Gagarina Avenue, Nizhny Novgorod 603950, Russia

Nizhny Novgorod Medical Academy, 10/1 Minin Square, Nizhny Novgorod 603950, Russia

Alexandr L. Matveyev, Grigory V. Gelikonov

Institute of Applied Physics of the Russian Academy of Sciences, 46 Uljanova Street, Nizhny Novgorod 603950, Russia

Nizhny Novgorod Medical Academy, 10/1 Minin Square, Nizhny Novgorod 603950, Russia

Alex Vitkin

Nizhny Novgorod Medical Academy, 10/1 Minin Square, Nizhny Novgorod 603950, Russia

University of Toronto and University Health Network, M5G 2M9, 610 University Avenue, Toronto, Ontario, Canada

J. Biomed. Opt. 20(7), 075006 (Jul 14, 2015). doi:10.1117/1.JBO.20.7.075006
History: Received March 6, 2015; Accepted June 16, 2015
Text Size: A A A

Abstract.  Feasibility of speckle tracking in optical coherence tomography (OCT) based on digital image correlation (DIC) is discussed in the context of elastography problems. Specifics of applying DIC methods to OCT, compared to processing of photographic images in mechanical engineering applications, are emphasized and main complications are pointed out. Analytical arguments are augmented by accurate numerical simulations of OCT speckle patterns. In contrast to DIC processing for displacement and strain estimation in photographic images, the accuracy of correlational speckle tracking in deformed OCT images is strongly affected by the coherent nature of speckles, for which strain-induced complications of speckle “blinking” and “boiling” are typical. The tracking accuracy is further compromised by the usually more pronounced pixelated structure of OCT scans compared with digital photographic images in classical DIC applications. Processing of complex-valued OCT data (comprising both amplitude and phase) compared to intensity-only scans mitigates these deleterious effects to some degree. Criteria of the attainable speckle tracking accuracy and its dependence on the key OCT system parameters are established.

Figures in this Article
© 2015 Society of Photo-Optical Instrumentation Engineers

Topics

Speckle

Citation

Vladimir Y. Zaitsev ; Alexandr L. Matveyev ; Lev A. Matveev ; Grigory V. Gelikonov ; Valentin M. Gelikonov, et al.
"Deformation-induced speckle-pattern evolution and feasibility of correlational speckle tracking in optical coherence elastography", J. Biomed. Opt. 20(7), 075006 (Jul 14, 2015). ; http://dx.doi.org/10.1117/1.JBO.20.7.075006


Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

PubMed Articles
Advertisement
  • Don't have an account?
  • Subscribe to the SPIE Digital Library
  • Create a FREE account to sign up for Digital Library content alerts and gain access to institutional subscriptions remotely.
Access This Article
Sign in or Create a personal account to Buy this article ($20 for members, $25 for non-members).
Access This Proceeding
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
Access This Chapter

Access to SPIE eBooks is limited to subscribing institutions and is not available as part of a personal subscription. Print or electronic versions of individual SPIE books may be purchased via SPIE.org.