Enhancements on multi-exposure LASCA to reveal information of speed distribution

D. Zölei-Szénási1, S. Czimmer, T. Smausz, F. Domoki, B. Hopp, L. Kemény, F. Bari, I. Iványi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Laser Speckle Contrast Analysis (LASCA) has been proven to be a highly useful tool for the full-field determination of the blood perfusion of a variety of tissues. Some of the major advantages of this technique are its relatively high spatial and temporal resolution as well as its good or excellent accordance to Doppler systems. However, traditionally it is only able to report a single characteristic speed regarding to the actual range of interest. This might be misleading if multiple characteristic speeds are present (e. g. tremor and perfusion in skin) or if several kinds of tissues are mixed (e. g. parenchyma and vessels in brain). Here we present two relatively simple extensions of LASCA for these problems. The application of multiple autocorrelation functions (combined with the usage of multiple exposure times) can help in the separation of multiple characteristic speeds. We also present a useful method for the separation of information those originate from a mixture of different tissues. The latter method can be also implemented to single-exposure systems.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of the European Optical Society
Volume10
DOIs
Publication statusPublished - Jun 28 2015

Fingerprint

augmentation
lasers
tremors
temporal resolution
autocorrelation
blood
brain
vessels
spatial resolution
high resolution

Keywords

  • LASCA
  • Multi-exposure
  • Multiple exposure times
  • Multiple speed values
  • Speckle imaging
  • Speed distribution

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Enhancements on multi-exposure LASCA to reveal information of speed distribution. / Zölei-Szénási1, D.; Czimmer, S.; Smausz, T.; Domoki, F.; Hopp, B.; Kemény, L.; Bari, F.; Iványi, I.

In: Journal of the European Optical Society, Vol. 10, 28.06.2015, p. 1-7.

Research output: Contribution to journalArticle

@article{657b8f5d115b43f49a3ff0d83e07ab2a,
title = "Enhancements on multi-exposure LASCA to reveal information of speed distribution",
abstract = "Laser Speckle Contrast Analysis (LASCA) has been proven to be a highly useful tool for the full-field determination of the blood perfusion of a variety of tissues. Some of the major advantages of this technique are its relatively high spatial and temporal resolution as well as its good or excellent accordance to Doppler systems. However, traditionally it is only able to report a single characteristic speed regarding to the actual range of interest. This might be misleading if multiple characteristic speeds are present (e. g. tremor and perfusion in skin) or if several kinds of tissues are mixed (e. g. parenchyma and vessels in brain). Here we present two relatively simple extensions of LASCA for these problems. The application of multiple autocorrelation functions (combined with the usage of multiple exposure times) can help in the separation of multiple characteristic speeds. We also present a useful method for the separation of information those originate from a mixture of different tissues. The latter method can be also implemented to single-exposure systems.",
keywords = "LASCA, Multi-exposure, Multiple exposure times, Multiple speed values, Speckle imaging, Speed distribution",
author = "D. Z{\"o}lei-Sz{\'e}n{\'a}si1 and S. Czimmer and T. Smausz and F. Domoki and B. Hopp and L. Kem{\'e}ny and F. Bari and I. Iv{\'a}nyi",
year = "2015",
month = "6",
day = "28",
doi = "10.2971/jeos.2015.15033",
language = "English",
volume = "10",
pages = "1--7",
journal = "Journal of the European Optical Society",
issn = "1990-2573",
publisher = "IOP Publishing Ltd.",

}

TY - JOUR

T1 - Enhancements on multi-exposure LASCA to reveal information of speed distribution

AU - Zölei-Szénási1, D.

AU - Czimmer, S.

AU - Smausz, T.

AU - Domoki, F.

AU - Hopp, B.

AU - Kemény, L.

AU - Bari, F.

AU - Iványi, I.

PY - 2015/6/28

Y1 - 2015/6/28

N2 - Laser Speckle Contrast Analysis (LASCA) has been proven to be a highly useful tool for the full-field determination of the blood perfusion of a variety of tissues. Some of the major advantages of this technique are its relatively high spatial and temporal resolution as well as its good or excellent accordance to Doppler systems. However, traditionally it is only able to report a single characteristic speed regarding to the actual range of interest. This might be misleading if multiple characteristic speeds are present (e. g. tremor and perfusion in skin) or if several kinds of tissues are mixed (e. g. parenchyma and vessels in brain). Here we present two relatively simple extensions of LASCA for these problems. The application of multiple autocorrelation functions (combined with the usage of multiple exposure times) can help in the separation of multiple characteristic speeds. We also present a useful method for the separation of information those originate from a mixture of different tissues. The latter method can be also implemented to single-exposure systems.

AB - Laser Speckle Contrast Analysis (LASCA) has been proven to be a highly useful tool for the full-field determination of the blood perfusion of a variety of tissues. Some of the major advantages of this technique are its relatively high spatial and temporal resolution as well as its good or excellent accordance to Doppler systems. However, traditionally it is only able to report a single characteristic speed regarding to the actual range of interest. This might be misleading if multiple characteristic speeds are present (e. g. tremor and perfusion in skin) or if several kinds of tissues are mixed (e. g. parenchyma and vessels in brain). Here we present two relatively simple extensions of LASCA for these problems. The application of multiple autocorrelation functions (combined with the usage of multiple exposure times) can help in the separation of multiple characteristic speeds. We also present a useful method for the separation of information those originate from a mixture of different tissues. The latter method can be also implemented to single-exposure systems.

KW - LASCA

KW - Multi-exposure

KW - Multiple exposure times

KW - Multiple speed values

KW - Speckle imaging

KW - Speed distribution

UR - http://www.scopus.com/inward/record.url?scp=84934767335&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84934767335&partnerID=8YFLogxK

U2 - 10.2971/jeos.2015.15033

DO - 10.2971/jeos.2015.15033

M3 - Article

VL - 10

SP - 1

EP - 7

JO - Journal of the European Optical Society

JF - Journal of the European Optical Society

SN - 1990-2573

ER -