Time varied illumination laser speckle contrast imaging
Laser speckle contrast imaging is a technique to determine blood flow rate with a limitation of low dynamic range. In this Letter, we introduce a varied illumination speckle contrast imaging method. It utilizes varying illumination during exposure to customize the correlation time (flow rate) to spe...
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| Veröffentlicht in: | Optics letters 2021-02, Vol.46 (4), p.713 |
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| container_title | Optics letters |
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| creator | Siket, Máté Jánoki, Imre Demeter, Kornél Szabó, Miklós Földesy, Péter |
| description | Laser speckle contrast imaging is a technique to determine blood flow rate with a limitation of low dynamic range. In this Letter, we introduce a varied illumination speckle contrast imaging method. It utilizes varying illumination during exposure to customize the correlation time (flow rate) to speckle contrast relation. The method can cover an order of magnitude larger range flow rate in a single exposure compared to constant illumination methods. The proposed method enables high dynamic range flow rate imaging, which is advantageous in studying larger vessels and small arteries. We demonstrate the theory by simulations and ex vivo and in vivo measurements. |
| doi_str_mv | 10.1364/OL.413767 |
| format | Article |
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We demonstrate the theory by simulations and ex vivo and in vivo measurements.</description><subject>Animals</subject><subject>Arteries</subject><subject>Blood flow</subject><subject>Blood vessels</subject><subject>Dynamic range</subject><subject>Flow velocity</subject><subject>Illumination</subject><subject>Imaging</subject><subject>Laser Speckle Contrast Imaging</subject><subject>Lighting - methods</subject><subject>Time Factors</subject><issn>0146-9592</issn><issn>1539-4794</issn><issn>1539-4794</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpd0E1Lw0AQBuBFFFurB_-ABLzoIXV3Zz-6Ryl-QaCXeg6bzaRszUfdTQT_vSmtHjwNAw8v7wwh14zOGSjxsMrmgoFW-oRMmQSTCm3EKZlSJlRqpOETchHjllKqNMA5mQBIrYVRU6LXvsHkywaPZeLremh8a3vftUltI4Yk7tB91Ji4ru2DjX3iG7vx7eaSnFW2jnh1nDPy_vy0Xr6m2erlbfmYpQ4Wiz61tCgqqysQQqiy4JyDleO-rw1YldJoXTKlZSktoAJtpCq1Q40KVWEczMjdIXcXus8BY583Pjqsa9tiN8Sci4XhkgPokd7-o9tuCO3YblRGSsoZiFHdH5QLXYwBq3wXxpvCd85ovq-Vr7L88M3R3hwTh6LB8k_-vg9-AOL2bdU</recordid><startdate>20210215</startdate><enddate>20210215</enddate><creator>Siket, Máté</creator><creator>Jánoki, Imre</creator><creator>Demeter, Kornél</creator><creator>Szabó, Miklós</creator><creator>Földesy, Péter</creator><general>Optical Society of America</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7X8</scope><orcidid>https://orcid.org/0000-0002-5974-064X</orcidid></search><sort><creationdate>20210215</creationdate><title>Time varied illumination laser speckle contrast imaging</title><author>Siket, Máté ; Jánoki, Imre ; Demeter, Kornél ; Szabó, Miklós ; Földesy, Péter</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c388t-a0bbfa7f34446db2223a5a7f13643efd5977d1675d5a3e637956d7ce7e6e6b9c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Animals</topic><topic>Arteries</topic><topic>Blood flow</topic><topic>Blood vessels</topic><topic>Dynamic range</topic><topic>Flow velocity</topic><topic>Illumination</topic><topic>Imaging</topic><topic>Laser Speckle Contrast Imaging</topic><topic>Lighting - methods</topic><topic>Time Factors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Siket, Máté</creatorcontrib><creatorcontrib>Jánoki, Imre</creatorcontrib><creatorcontrib>Demeter, Kornél</creatorcontrib><creatorcontrib>Szabó, Miklós</creatorcontrib><creatorcontrib>Földesy, Péter</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>MEDLINE - Academic</collection><jtitle>Optics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Siket, Máté</au><au>Jánoki, Imre</au><au>Demeter, Kornél</au><au>Szabó, Miklós</au><au>Földesy, Péter</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Time varied illumination laser speckle contrast imaging</atitle><jtitle>Optics letters</jtitle><addtitle>Opt Lett</addtitle><date>2021-02-15</date><risdate>2021</risdate><volume>46</volume><issue>4</issue><spage>713</spage><pages>713-</pages><issn>0146-9592</issn><issn>1539-4794</issn><eissn>1539-4794</eissn><abstract>Laser speckle contrast imaging is a technique to determine blood flow rate with a limitation of low dynamic range. 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| ispartof | Optics letters, 2021-02, Vol.46 (4), p.713 |
| issn | 0146-9592 1539-4794 1539-4794 |
| language | eng |
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| source | MEDLINE; Optica Publishing Group Journals |
| subjects | Animals Arteries Blood flow Blood vessels Dynamic range Flow velocity Illumination Imaging Laser Speckle Contrast Imaging Lighting - methods Time Factors |
| title | Time varied illumination laser speckle contrast imaging |
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