Assessment of thermal coagulation in ex-vivo tissues using Raman spectroscopy
Raman spectroscopy is used to study the effects of heating on specific molecular bonds present in albumen-based coagulation phantoms and ex-vivo tissues. Thermal coagulation is induced by submerging albumen-based phantoms in a 75°C water bath to achieve target temperatures of 45, 55, 65, and 75°C. L...
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Veröffentlicht in: | Journal of biomedical optics 2010-11, Vol.15 (6), p.068001-068001 |
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description | Raman spectroscopy is used to study the effects of heating on specific molecular bonds present in albumen-based coagulation phantoms and ex-vivo tissues. Thermal coagulation is induced by submerging albumen-based phantoms in a 75°C water bath to achieve target temperatures of 45, 55, 65, and 75°C. Laser photocoagulation is performed on ex-vivo bovine muscle samples, yielding induced temperatures between 46 and 90°C, as reported by implanted microthermocouples. All phantoms and tissue samples are cooled to room temperature, and Raman spectra are acquired at the microthermocouple locations. Shifts in major Raman bands are observed with laser heating in bovine muscle, specifically from the amide-1 α-helix group (∼1655 cm(-1)), the CH(2)/CH(3) group (∼1446 cm(-1)), the Cα-H stretch group (∼1312 cm(-1)), and the CN stretch group (∼1121cm(-1)). Raman bands at 1334 cm(-1) (tryptophan), 1317 cm(-1) [ν(Cα-H)], and 1655 cm(-1) (amide-1 α-helix) also show a decrease in intensity following heating. The results suggest that Raman band locations and relative intensities are affected by thermal denaturation of proteins, and hence, may be a useful tool for monitoring the onset and progression of coagulation during thermal therapies. |
doi_str_mv | 10.1117/1.3512231 |
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Thermal coagulation is induced by submerging albumen-based phantoms in a 75°C water bath to achieve target temperatures of 45, 55, 65, and 75°C. Laser photocoagulation is performed on ex-vivo bovine muscle samples, yielding induced temperatures between 46 and 90°C, as reported by implanted microthermocouples. All phantoms and tissue samples are cooled to room temperature, and Raman spectra are acquired at the microthermocouple locations. Shifts in major Raman bands are observed with laser heating in bovine muscle, specifically from the amide-1 α-helix group (∼1655 cm(-1)), the CH(2)/CH(3) group (∼1446 cm(-1)), the Cα-H stretch group (∼1312 cm(-1)), and the CN stretch group (∼1121cm(-1)). Raman bands at 1334 cm(-1) (tryptophan), 1317 cm(-1) [ν(Cα-H)], and 1655 cm(-1) (amide-1 α-helix) also show a decrease in intensity following heating. The results suggest that Raman band locations and relative intensities are affected by thermal denaturation of proteins, and hence, may be a useful tool for monitoring the onset and progression of coagulation during thermal therapies.</description><identifier>ISSN: 1083-3668</identifier><identifier>EISSN: 1560-2281</identifier><identifier>DOI: 10.1117/1.3512231</identifier><identifier>PMID: 21198214</identifier><language>eng</language><publisher>United States</publisher><subject>Animals ; Bands ; Cattle ; Coagulation ; Equipment Design ; Equipment Failure Analysis ; Heating ; Hyperthermia, Induced - instrumentation ; Laser Coagulation - instrumentation ; Lasers ; Monitoring ; Muscle, Skeletal - physiology ; Muscle, Skeletal - surgery ; Muscles ; Progressions ; Raman spectroscopy ; Spectrum Analysis, Raman - instrumentation</subject><ispartof>Journal of biomedical optics, 2010-11, Vol.15 (6), p.068001-068001</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c351t-866dab791e6d33314d7c19536176f10e44d0bd40158f58439a984a3f54952e6b3</citedby><cites>FETCH-LOGICAL-c351t-866dab791e6d33314d7c19536176f10e44d0bd40158f58439a984a3f54952e6b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21198214$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Rodrigues, Matthew</creatorcontrib><creatorcontrib>Weersink, Robert A</creatorcontrib><creatorcontrib>Whelan, William M</creatorcontrib><title>Assessment of thermal coagulation in ex-vivo tissues using Raman spectroscopy</title><title>Journal of biomedical optics</title><addtitle>J Biomed Opt</addtitle><description>Raman spectroscopy is used to study the effects of heating on specific molecular bonds present in albumen-based coagulation phantoms and ex-vivo tissues. Thermal coagulation is induced by submerging albumen-based phantoms in a 75°C water bath to achieve target temperatures of 45, 55, 65, and 75°C. Laser photocoagulation is performed on ex-vivo bovine muscle samples, yielding induced temperatures between 46 and 90°C, as reported by implanted microthermocouples. All phantoms and tissue samples are cooled to room temperature, and Raman spectra are acquired at the microthermocouple locations. Shifts in major Raman bands are observed with laser heating in bovine muscle, specifically from the amide-1 α-helix group (∼1655 cm(-1)), the CH(2)/CH(3) group (∼1446 cm(-1)), the Cα-H stretch group (∼1312 cm(-1)), and the CN stretch group (∼1121cm(-1)). Raman bands at 1334 cm(-1) (tryptophan), 1317 cm(-1) [ν(Cα-H)], and 1655 cm(-1) (amide-1 α-helix) also show a decrease in intensity following heating. The results suggest that Raman band locations and relative intensities are affected by thermal denaturation of proteins, and hence, may be a useful tool for monitoring the onset and progression of coagulation during thermal therapies.</description><subject>Animals</subject><subject>Bands</subject><subject>Cattle</subject><subject>Coagulation</subject><subject>Equipment Design</subject><subject>Equipment Failure Analysis</subject><subject>Heating</subject><subject>Hyperthermia, Induced - instrumentation</subject><subject>Laser Coagulation - instrumentation</subject><subject>Lasers</subject><subject>Monitoring</subject><subject>Muscle, Skeletal - physiology</subject><subject>Muscle, Skeletal - surgery</subject><subject>Muscles</subject><subject>Progressions</subject><subject>Raman spectroscopy</subject><subject>Spectrum Analysis, Raman - instrumentation</subject><issn>1083-3668</issn><issn>1560-2281</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2010</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkEtLw0AUhQdRbK0u_AMyO3GROndemVmW4gsqgug6TJJJjSSZmJsU--9NaXXr6p7Fx-Hcj5BLYHMAiG9hLhRwLuCITEFpFnFu4HjMzIhIaG0m5AzxkzFmtNWnZMIBrOEgp-R5gegRa9_0NBS0__Bd7SqaBbceKteXoaFlQ_13tCk3gfYl4uCRDlg2a_rqatdQbH3WdwGz0G7PyUnhKvQXhzsj7_d3b8vHaPXy8LRcrKJsHNpHRuvcpbEFr3MhBMg8zsAqoSHWBTAvZc7SXDJQplBGCuuskU4USlrFvU7FjFzve9sufI2D-qQuMfNV5RofBkyMsRJELO3_JOdKaWt35M2ezMZnsPNF0nZl7bptAizZaU4gOWge2atD65DWPv8jf72KH-rsdgk</recordid><startdate>20101101</startdate><enddate>20101101</enddate><creator>Rodrigues, Matthew</creator><creator>Weersink, Robert A</creator><creator>Whelan, William M</creator><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>7X8</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>L7M</scope></search><sort><creationdate>20101101</creationdate><title>Assessment of thermal coagulation in ex-vivo tissues using Raman spectroscopy</title><author>Rodrigues, Matthew ; Weersink, Robert A ; Whelan, William M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c351t-866dab791e6d33314d7c19536176f10e44d0bd40158f58439a984a3f54952e6b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2010</creationdate><topic>Animals</topic><topic>Bands</topic><topic>Cattle</topic><topic>Coagulation</topic><topic>Equipment Design</topic><topic>Equipment Failure Analysis</topic><topic>Heating</topic><topic>Hyperthermia, Induced - instrumentation</topic><topic>Laser Coagulation - instrumentation</topic><topic>Lasers</topic><topic>Monitoring</topic><topic>Muscle, Skeletal - physiology</topic><topic>Muscle, Skeletal - surgery</topic><topic>Muscles</topic><topic>Progressions</topic><topic>Raman spectroscopy</topic><topic>Spectrum Analysis, Raman - instrumentation</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rodrigues, Matthew</creatorcontrib><creatorcontrib>Weersink, Robert A</creatorcontrib><creatorcontrib>Whelan, William M</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of biomedical optics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rodrigues, Matthew</au><au>Weersink, Robert A</au><au>Whelan, William M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Assessment of thermal coagulation in ex-vivo tissues using Raman spectroscopy</atitle><jtitle>Journal of biomedical optics</jtitle><addtitle>J Biomed Opt</addtitle><date>2010-11-01</date><risdate>2010</risdate><volume>15</volume><issue>6</issue><spage>068001</spage><epage>068001</epage><pages>068001-068001</pages><issn>1083-3668</issn><eissn>1560-2281</eissn><abstract>Raman spectroscopy is used to study the effects of heating on specific molecular bonds present in albumen-based coagulation phantoms and ex-vivo tissues. Thermal coagulation is induced by submerging albumen-based phantoms in a 75°C water bath to achieve target temperatures of 45, 55, 65, and 75°C. Laser photocoagulation is performed on ex-vivo bovine muscle samples, yielding induced temperatures between 46 and 90°C, as reported by implanted microthermocouples. All phantoms and tissue samples are cooled to room temperature, and Raman spectra are acquired at the microthermocouple locations. Shifts in major Raman bands are observed with laser heating in bovine muscle, specifically from the amide-1 α-helix group (∼1655 cm(-1)), the CH(2)/CH(3) group (∼1446 cm(-1)), the Cα-H stretch group (∼1312 cm(-1)), and the CN stretch group (∼1121cm(-1)). Raman bands at 1334 cm(-1) (tryptophan), 1317 cm(-1) [ν(Cα-H)], and 1655 cm(-1) (amide-1 α-helix) also show a decrease in intensity following heating. The results suggest that Raman band locations and relative intensities are affected by thermal denaturation of proteins, and hence, may be a useful tool for monitoring the onset and progression of coagulation during thermal therapies.</abstract><cop>United States</cop><pmid>21198214</pmid><doi>10.1117/1.3512231</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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subjects | Animals Bands Cattle Coagulation Equipment Design Equipment Failure Analysis Heating Hyperthermia, Induced - instrumentation Laser Coagulation - instrumentation Lasers Monitoring Muscle, Skeletal - physiology Muscle, Skeletal - surgery Muscles Progressions Raman spectroscopy Spectrum Analysis, Raman - instrumentation |
title | Assessment of thermal coagulation in ex-vivo tissues using Raman spectroscopy |
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