Effects of heterogeneous absorption of laser radiation in biotissue ablation: Characterization of ablation of fat with a pulsed CO2 laser
Identifieur interne : 001A86 ( Istex/Corpus ); précédent : 001A85; suivant : 001A87Effects of heterogeneous absorption of laser radiation in biotissue ablation: Characterization of ablation of fat with a pulsed CO2 laser
Auteurs : E. Victor Ross ; Yacov Domankevitz ; R. Rox AndersonSource :
- Lasers in Surgery and Medicine [ 0196-8092 ] ; 1997.
English descriptors
- KwdEn :
- Ablation, Ablation rate, Ablation rates, Ablation threshold, Absorption coefficient, Absorption coefficients, Adipose, Adipose tissue, Biotissue ablation, Carbon dioxide laser ablation, Clinical situations, Confidence interval, Dermal ablation, Dermis, Detector head, Explosive vaporization, Fatty acids, Flash point, Fresh adipose tissue, Fresh dermis, Heterogeneous absorption, Incident beam, Laser, Laser ablation, Laser beam, Laser energy, Laser plume, Laser radiation, Lasers surg, Mass loss, Mass loss measurements, Optical properties, Plastic sheet, Plume, Qualitative differences, Radiant exposure, Room temperature, Smoke evacuator, Thermal properties, Total mass, Vaporization, Victor ross, Znse window.
- Teeft :
- Ablation, Ablation rate, Ablation rates, Ablation threshold, Absorption coefficient, Absorption coefficients, Adipose, Adipose tissue, Biotissue ablation, Carbon dioxide laser ablation, Clinical situations, Confidence interval, Dermal ablation, Dermis, Detector head, Explosive vaporization, Fatty acids, Flash point, Fresh adipose tissue, Fresh dermis, Heterogeneous absorption, Incident beam, Laser, Laser ablation, Laser beam, Laser energy, Laser plume, Laser radiation, Lasers surg, Mass loss, Mass loss measurements, Optical properties, Plastic sheet, Plume, Qualitative differences, Radiant exposure, Room temperature, Smoke evacuator, Thermal properties, Total mass, Vaporization, Victor ross, Znse window.
Abstract
Physicians encounter several clinical situations in which fat must be removed. In this study, the characterization of fat ablation produced by a pulsed CO2 laser is reported.
Url:
DOI: 10.1002/(SICI)1096-9101(1997)21:1<59::AID-LSM9>3.0.CO;2-X
Links to Exploration step
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<profileDesc><abstract xml:lang="en" style="main"><head>Abstract</head>
Background and Objective
<p>Physicians encounter several clinical situations in which fat must be removed. In this study, the characterization of fat ablation produced by a pulsed CO<hi rend="subscript">2</hi>
laser is reported.</p>
Study Design/Materials and Methods
<p>An RF excited 800 μs pulsed CO<hi rend="subscript">2</hi>
laser operating at 10.6 μm was used to ablate fresh porcine fat. The heat of ablation and ablation threshold were determined using a mass loss technique. Absorption coefficients for fat and dermis were determined by attenuated total reflection spectroscopy.</p>
Results
<p>Threshold radiant exposure and heat of ablation for fat were calculated from the mass loss measurements to be 1.05 J/cm<hi rend="superscript">2</hi>
and 2.4 J/cm<hi rend="superscript">3</hi>
, respectively. The absorption coefficients of fat and dermis at 10.6 μm were 250 and 780 cm<hi rend="superscript">−1</hi>
, respectively. Pulsed CO<hi rend="subscript">2</hi>
laser ablation of fat caused ejection of fat droplets, which ignited after high fluence pulses.</p>
Conclusion
<p>A pulsed CO<hi rend="subscript">2</hi>
laser can effectively ablate fat with a threshold fluence and efficiency comparable to other soft tissues. Our data suggest that fat ablation occurs primarily through the ejection of intact fat particles via the explosive vaporization of intervening water “lakes.” Lasers Surg. Med. 21:59–64, 1997. © 1997 Wiley‐Liss, Inc.</p>
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<titleGroup><title type="main" xml:lang="en">Effects of heterogeneous absorption of laser radiation in biotissue ablation: Characterization of ablation of fat with a pulsed CO<sub>2</sub>
laser</title>
</titleGroup>
<creators><creator xml:id="au1" creatorRole="author" affiliationRef="#af1" corresponding="yes"><personName><givenNames>E. Victor</givenNames>
<familyName>Ross</familyName>
<degrees>MD</degrees>
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<creator xml:id="au2" creatorRole="author" affiliationRef="#af1"><personName><givenNames>Yacov</givenNames>
<familyName>Domankevitz</familyName>
<degrees>MS</degrees>
</personName>
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<creator xml:id="au3" creatorRole="author" affiliationRef="#af1"><personName><givenNames>R. Rox</givenNames>
<familyName>Anderson</familyName>
<degrees>MD</degrees>
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<affiliationGroup><affiliation xml:id="af1" countryCode="US" type="organization"><unparsedAffiliation>Wellman Laboratories of Photomedicine and Department of Dermatology, Massachusetts General Hospital, Boston, MA 02114</unparsedAffiliation>
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<keywordGroup xml:lang="en" type="author"><keyword xml:id="kwd1">laser ablation</keyword>
<keyword xml:id="kwd2">fat</keyword>
<keyword xml:id="kwd3">mass loss</keyword>
<keyword xml:id="kwd4">CO<sub>2</sub>
laser</keyword>
</keywordGroup>
<abstractGroup><abstract type="main" xml:lang="en"><title type="main">Abstract</title>
<section xml:id="abs1-1"><title type="main">Background and Objective</title>
<p>Physicians encounter several clinical situations in which fat must be removed. In this study, the characterization of fat ablation produced by a pulsed CO<sub>2</sub>
laser is reported.</p>
</section>
<section xml:id="abs1-2"><title type="main">Study Design/Materials and Methods</title>
<p>An RF excited 800 μs pulsed CO<sub>2</sub>
laser operating at 10.6 μm was used to ablate fresh porcine fat. The heat of ablation and ablation threshold were determined using a mass loss technique. Absorption coefficients for fat and dermis were determined by attenuated total reflection spectroscopy.</p>
</section>
<section xml:id="abs1-3"><title type="main">Results</title>
<p>Threshold radiant exposure and heat of ablation for fat were calculated from the mass loss measurements to be 1.05 J/cm<sup>2</sup>
and 2.4 J/cm<sup>3</sup>
, respectively. The absorption coefficients of fat and dermis at 10.6 μm were 250 and 780 cm<sup>−1</sup>
, respectively. Pulsed CO<sub>2</sub>
laser ablation of fat caused ejection of fat droplets, which ignited after high fluence pulses.</p>
</section>
<section xml:id="abs1-4"><title type="main">Conclusion</title>
<p>A pulsed CO<sub>2</sub>
laser can effectively ablate fat with a threshold fluence and efficiency comparable to other soft tissues. Our data suggest that fat ablation occurs primarily through the ejection of intact fat particles via the explosive vaporization of intervening water “lakes.” Lasers Surg. Med. 21:59–64, 1997. © 1997 Wiley‐Liss, Inc.</p>
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<affiliation>Wellman Laboratories of Photomedicine and Department of Dermatology, Massachusetts General Hospital, Boston, MA 02114</affiliation>
<affiliation>Correspondence address: Naval Hospital San Diego, Department of Dermatology, San Diego, CA 92134.</affiliation>
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<abstract>Physicians encounter several clinical situations in which fat must be removed. In this study, the characterization of fat ablation produced by a pulsed CO2 laser is reported.</abstract>
<abstract>An RF excited 800 μs pulsed CO2 laser operating at 10.6 μm was used to ablate fresh porcine fat. The heat of ablation and ablation threshold were determined using a mass loss technique. Absorption coefficients for fat and dermis were determined by attenuated total reflection spectroscopy.</abstract>
<abstract>Threshold radiant exposure and heat of ablation for fat were calculated from the mass loss measurements to be 1.05 J/cm2 and 2.4 J/cm3, respectively. The absorption coefficients of fat and dermis at 10.6 μm were 250 and 780 cm−1, respectively. Pulsed CO2 laser ablation of fat caused ejection of fat droplets, which ignited after high fluence pulses.</abstract>
<abstract>A pulsed CO2 laser can effectively ablate fat with a threshold fluence and efficiency comparable to other soft tissues. Our data suggest that fat ablation occurs primarily through the ejection of intact fat particles via the explosive vaporization of intervening water “lakes.” Lasers Surg. Med. 21:59–64, 1997. © 1997 Wiley‐Liss, Inc.</abstract>
<subject lang="en"><genre>keywords</genre>
<topic>laser ablation</topic>
<topic>fat</topic>
<topic>mass loss</topic>
<topic>CO2 laser</topic>
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<relatedItem type="host"><titleInfo><title>Lasers in Surgery and Medicine</title>
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