ThuliumV1, Pmc, Corpus, bibRecord, 000307

Time and Frequency Resolved XeCl Laser-Induced Mechanical Transients in Otic Capsule Bone

Identifieur interne : 000307 ( Pmc/Corpus ); précédent : 000306; suivant : 000308

Time and Frequency Resolved XeCl Laser-Induced Mechanical Transients in Otic Capsule Bone

Auteurs : Ryan G. Mccaughey ; Brian J. F. Wong ; Joseph Neev ; Mark R. Dickinson

Source :

Photomedicine and laser surgery [ 1549-5418 ] ; 2008.

RBID : PMC:4144431

Abstract

Objective

This study identifies the presence of photoacoustic waves during excimer laser treatment of porcine otic capsule bone.

Background Data

Pulsed ultraviolet lasers have been suggested for use in middle ear surgery due to their potential for fiberoptic delivery, decreased thermal trauma, and precise ablation characteristics. However, the short pulse width of excimer lasers (typically 10–150 ns) can create large thermoelastic stresses in the ablation specimen.

Materials and Methods

A XeCl (λ = 308 nm, τ = 12 ns) excimer laser was used to ablate wafers of bone with energies of 90, 35, 13, 5, and 1.8 mJ/pulse. Custom high-frequency polyvinyldifluoride (PVDF) piezoelectric film transducers were fabricated and attached to the slices of bone. During ablation photoacoustic signals were amplified using a low-noise preamplifier and recorded on a digitizing oscilloscope.

Results

Photoacoustic waves were clearly identified. Stress wave amplitude increased with laser fluence.

Conclusion

A laser fluence must be found that compromises between an increased ablation rate and increased stress wave amplitude. The acoustic power levels generated during ablation are below maximum exposure limits.

Url:

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4144431

DOI: 10.1089/pho.2007.2127
PubMed: 18248159
PubMed Central: 4144431

Links to Exploration step

PMC:4144431

Le document en format XML

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<author><name sortKey="Mccaughey, Ryan G" sort="Mccaughey, Ryan G" uniqKey="Mccaughey R" first="Ryan G." last="Mccaughey">Ryan G. Mccaughey</name>
<affiliation><nlm:aff id="A1">Beckman Laser Institute and Medical Clinic, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Wong, Brian J F" sort="Wong, Brian J F" uniqKey="Wong B" first="Brian J. F." last="Wong">Brian J. F. Wong</name>
<affiliation><nlm:aff id="A1">Beckman Laser Institute and Medical Clinic, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="A2">Department of Otolaryngology–Head and Neck Surgery, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Neev, Joseph" sort="Neev, Joseph" uniqKey="Neev J" first="Joseph" last="Neev">Joseph Neev</name>
<affiliation><nlm:aff id="A1">Beckman Laser Institute and Medical Clinic, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Dickinson, Mark R" sort="Dickinson, Mark R" uniqKey="Dickinson M" first="Mark R." last="Dickinson">Mark R. Dickinson</name>
<affiliation><nlm:aff id="A3">School of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester, U.K</nlm:aff>
</affiliation>
</author>
</titleStmt>
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<idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4144431</idno>
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<idno type="doi">10.1089/pho.2007.2127</idno>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Time and Frequency Resolved XeCl Laser-Induced Mechanical Transients in Otic Capsule Bone</title>
<author><name sortKey="Mccaughey, Ryan G" sort="Mccaughey, Ryan G" uniqKey="Mccaughey R" first="Ryan G." last="Mccaughey">Ryan G. Mccaughey</name>
<affiliation><nlm:aff id="A1">Beckman Laser Institute and Medical Clinic, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Wong, Brian J F" sort="Wong, Brian J F" uniqKey="Wong B" first="Brian J. F." last="Wong">Brian J. F. Wong</name>
<affiliation><nlm:aff id="A1">Beckman Laser Institute and Medical Clinic, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
<affiliation><nlm:aff id="A2">Department of Otolaryngology–Head and Neck Surgery, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Neev, Joseph" sort="Neev, Joseph" uniqKey="Neev J" first="Joseph" last="Neev">Joseph Neev</name>
<affiliation><nlm:aff id="A1">Beckman Laser Institute and Medical Clinic, University of California–Irvine, Irvine, California</nlm:aff>
</affiliation>
</author>
<author><name sortKey="Dickinson, Mark R" sort="Dickinson, Mark R" uniqKey="Dickinson M" first="Mark R." last="Dickinson">Mark R. Dickinson</name>
<affiliation><nlm:aff id="A3">School of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester, U.K</nlm:aff>
</affiliation>
</author>
</analytic>
<series><title level="j">Photomedicine and laser surgery</title>
<idno type="ISSN">1549-5418</idno>
<idno type="eISSN">1557-8550</idno>
<imprint><date when="2008">2008</date>
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<front><div type="abstract" xml:lang="en"><sec id="S1"><title>Objective</title>
<p id="P1">This study identifies the presence of photoacoustic waves during excimer laser treatment of porcine otic capsule bone.</p>
</sec>
<sec id="S2"><title>Background Data</title>
<p id="P2">Pulsed ultraviolet lasers have been suggested for use in middle ear surgery due to their potential for fiberoptic delivery, decreased thermal trauma, and precise ablation characteristics. However, the short pulse width of excimer lasers (typically 10–150 ns) can create large thermoelastic stresses in the ablation specimen.</p>
</sec>
<sec id="S3"><title>Materials and Methods</title>
<p id="P3">A XeCl (<italic>λ</italic>
 = 308 nm, <italic>τ</italic>
 = 12 ns) excimer laser was used to ablate wafers of bone with energies of 90, 35, 13, 5, and 1.8 mJ/pulse. Custom high-frequency polyvinyldifluoride (PVDF) piezoelectric film transducers were fabricated and attached to the slices of bone. During ablation photoacoustic signals were amplified using a low-noise preamplifier and recorded on a digitizing oscilloscope.</p>
</sec>
<sec id="S4"><title>Results</title>
<p id="P4">Photoacoustic waves were clearly identified. Stress wave amplitude increased with laser fluence.</p>
</sec>
<sec id="S5"><title>Conclusion</title>
<p id="P5">A laser fluence must be found that compromises between an increased ablation rate and increased stress wave amplitude. The acoustic power levels generated during ablation are below maximum exposure limits.</p>
</sec>
</div>
</front>
</TEI>
<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
  <pmc-dir>properties manuscript</pmc-dir>
  <front><journal-meta><journal-id journal-id-type="nlm-journal-id">101222340</journal-id>
<journal-id journal-id-type="pubmed-jr-id">32019</journal-id>
<journal-id journal-id-type="nlm-ta">Photomed Laser Surg</journal-id>
<journal-id journal-id-type="iso-abbrev">Photomed Laser Surg</journal-id>
<journal-title-group><journal-title>Photomedicine and laser surgery</journal-title>
</journal-title-group>
<issn pub-type="ppub">1549-5418</issn>
<issn pub-type="epub">1557-8550</issn>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">18248159</article-id>
<article-id pub-id-type="pmc">4144431</article-id>
<article-id pub-id-type="doi">10.1089/pho.2007.2127</article-id>
<article-id pub-id-type="manuscript">NIHMS616649</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Article</subject>
</subj-group>
</article-categories>
<title-group><article-title>Time and Frequency Resolved XeCl Laser-Induced Mechanical Transients in Otic Capsule Bone</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>McCAUGHEY</surname>
<given-names>RYAN G.</given-names>
</name>
<degrees>Ph.D.</degrees>
<xref ref-type="aff" rid="A1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>WONG</surname>
<given-names>BRIAN J.F.</given-names>
</name>
<degrees>M.D.</degrees>
<xref ref-type="aff" rid="A1">1</xref>
<xref ref-type="aff" rid="A2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>NEEV</surname>
<given-names>JOSEPH</given-names>
</name>
<degrees>Ph.D.</degrees>
<xref ref-type="aff" rid="A1">1</xref>
</contrib>
<contrib contrib-type="author"><name><surname>DICKINSON</surname>
<given-names>MARK R.</given-names>
</name>
<degrees>Ph.D.</degrees>
<xref ref-type="aff" rid="A3">3</xref>
</contrib>
</contrib-group>
<aff id="A1"><label>1</label>
Beckman Laser Institute and Medical Clinic, University of California–Irvine, Irvine, California</aff>
<aff id="A2"><label>2</label>
Department of Otolaryngology–Head and Neck Surgery, University of California–Irvine, Irvine, California</aff>
<aff id="A3"><label>3</label>
School of Physics and Astronomy, Schuster Laboratory, University of Manchester, Manchester, U.K</aff>
<author-notes><corresp id="FN1">Address reprint requests to: Dr. Ryan G. McCaughey, Ph.D. Beckman Laser Institute and Medical Clinic University of California, Irvine 1002 Health Sciences Road East Irvine, CA 92715, <email>rmccaugh@uci.edu</email>
</corresp>
</author-notes>
<pub-date pub-type="nihms-submitted"><day>30</day>
<month>7</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="ppub"><month>2</month>
<year>2008</year>
</pub-date>
<pub-date pub-type="pmc-release"><day>26</day>
<month>8</month>
<year>2014</year>
</pub-date>
<volume>26</volume>
<issue>1</issue>
<fpage>31</fpage>
<lpage>36</lpage>
<pmc-comment>elocation-id from pubmed: 10.1089/pho.2007.2127</pmc-comment>
      <permissions><copyright-statement>© Mary Ann Liebert, Inc.</copyright-statement>
</permissions>
<abstract><sec id="S1"><title>Objective</title>
<p id="P1">This study identifies the presence of photoacoustic waves during excimer laser treatment of porcine otic capsule bone.</p>
</sec>
<sec id="S2"><title>Background Data</title>
<p id="P2">Pulsed ultraviolet lasers have been suggested for use in middle ear surgery due to their potential for fiberoptic delivery, decreased thermal trauma, and precise ablation characteristics. However, the short pulse width of excimer lasers (typically 10–150 ns) can create large thermoelastic stresses in the ablation specimen.</p>
</sec>
<sec id="S3"><title>Materials and Methods</title>
<p id="P3">A XeCl (<italic>λ</italic>
 = 308 nm, <italic>τ</italic>
 = 12 ns) excimer laser was used to ablate wafers of bone with energies of 90, 35, 13, 5, and 1.8 mJ/pulse. Custom high-frequency polyvinyldifluoride (PVDF) piezoelectric film transducers were fabricated and attached to the slices of bone. During ablation photoacoustic signals were amplified using a low-noise preamplifier and recorded on a digitizing oscilloscope.</p>
</sec>
<sec id="S4"><title>Results</title>
<p id="P4">Photoacoustic waves were clearly identified. Stress wave amplitude increased with laser fluence.</p>
</sec>
<sec id="S5"><title>Conclusion</title>
<p id="P5">A laser fluence must be found that compromises between an increased ablation rate and increased stress wave amplitude. The acoustic power levels generated during ablation are below maximum exposure limits.</p>
</sec>
</abstract>
</article-meta>
</front>
</pmc>
</record>

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Time and Frequency Resolved XeCl Laser-Induced Mechanical Transients in Otic Capsule Bone

Time and Frequency Resolved XeCl Laser-Induced Mechanical Transients in Otic Capsule Bone

Source :

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki