Radiometric surface temperature measurements during dye-assisted laser skin closure: In vitro and in vivo results

Nathaniel M. Fried, Bernard Choi, Ashley J. Welch, Joseph T. Walsh

Research output: Contribution to journalArticle

Abstract

Background and Objective: A thermal camera was used to measure surface temperatures during laser skin welding to provide feedback for optimization of the laser parameters. Study Design/Materials and Methods: Two-centimeter- long, full-thickness incisions were made in guinea pig skin in vitro and in vivo. India ink was applied to the incision edges, which were then mechanically apposed. Continuous-wave, 1.06-μm Nd:YAG laser radiation was scanned over the incisions, producing an effective pulse duration of ~100 msec. Cooling durations between scans of 1.6, 4.0, and 8.0 sec were studied in vitro. A 5-mm-diameter laser spot was used with the power kept constant at 10 W. Thermal images were obtained at 30 frames per second with a thermal camera detecting 3-5 μm radiation. Surface temperatures were recorded at 0, 1, and 6 mm from the center line of the incision. Results/Conclusions: Cooling durations of 1.6 and 4.0 seconds in vitro resulted in temperatures at the weld site that remained above ~65°C for prolonged periods of time. Cooling durations of 8.0 seconds were sufficient both in vitro and in vivo to prevent a significant rise in baseline temperatures at the weld site over time.

Original languageEnglish (US)
Pages (from-to)291-303
Number of pages13
JournalLasers in Surgery and Medicine
Volume25
Issue number4
DOIs
StatePublished - 1999

Fingerprint

Dye Lasers
Skin
Lasers
Temperature
Hot Temperature
Radiation
Welding
Solid-State Lasers
Guinea Pigs
In Vitro Techniques

Keywords

  • Infrared radiation
  • Thermal camera
  • Tissue welding

ASJC Scopus subject areas

  • Surgery

Cite this

Radiometric surface temperature measurements during dye-assisted laser skin closure : In vitro and in vivo results. / Fried, Nathaniel M.; Choi, Bernard; Welch, Ashley J.; Walsh, Joseph T.

In: Lasers in Surgery and Medicine, Vol. 25, No. 4, 1999, p. 291-303.

Research output: Contribution to journalArticle

Fried, Nathaniel M. ; Choi, Bernard ; Welch, Ashley J. ; Walsh, Joseph T. / Radiometric surface temperature measurements during dye-assisted laser skin closure : In vitro and in vivo results. In: Lasers in Surgery and Medicine. 1999 ; Vol. 25, No. 4. pp. 291-303.
@article{a0e60d4a94d744f4923638fbb1289d55,
title = "Radiometric surface temperature measurements during dye-assisted laser skin closure: In vitro and in vivo results",
abstract = "Background and Objective: A thermal camera was used to measure surface temperatures during laser skin welding to provide feedback for optimization of the laser parameters. Study Design/Materials and Methods: Two-centimeter- long, full-thickness incisions were made in guinea pig skin in vitro and in vivo. India ink was applied to the incision edges, which were then mechanically apposed. Continuous-wave, 1.06-μm Nd:YAG laser radiation was scanned over the incisions, producing an effective pulse duration of ~100 msec. Cooling durations between scans of 1.6, 4.0, and 8.0 sec were studied in vitro. A 5-mm-diameter laser spot was used with the power kept constant at 10 W. Thermal images were obtained at 30 frames per second with a thermal camera detecting 3-5 μm radiation. Surface temperatures were recorded at 0, 1, and 6 mm from the center line of the incision. Results/Conclusions: Cooling durations of 1.6 and 4.0 seconds in vitro resulted in temperatures at the weld site that remained above ~65°C for prolonged periods of time. Cooling durations of 8.0 seconds were sufficient both in vitro and in vivo to prevent a significant rise in baseline temperatures at the weld site over time.",
keywords = "Infrared radiation, Thermal camera, Tissue welding",
author = "Fried, {Nathaniel M.} and Bernard Choi and Welch, {Ashley J.} and Walsh, {Joseph T.}",
year = "1999",
doi = "10.1002/(SICI)1096-9101(1999)25:4<291::AID-LSM4>3.0.CO;2-#",
language = "English (US)",
volume = "25",
pages = "291--303",
journal = "Lasers in Surgery and Medicine",
issn = "0196-8092",
publisher = "Wiley-Liss Inc.",
number = "4",

}

TY - JOUR

T1 - Radiometric surface temperature measurements during dye-assisted laser skin closure

T2 - In vitro and in vivo results

AU - Fried, Nathaniel M.

AU - Choi, Bernard

AU - Welch, Ashley J.

AU - Walsh, Joseph T.

PY - 1999

Y1 - 1999

N2 - Background and Objective: A thermal camera was used to measure surface temperatures during laser skin welding to provide feedback for optimization of the laser parameters. Study Design/Materials and Methods: Two-centimeter- long, full-thickness incisions were made in guinea pig skin in vitro and in vivo. India ink was applied to the incision edges, which were then mechanically apposed. Continuous-wave, 1.06-μm Nd:YAG laser radiation was scanned over the incisions, producing an effective pulse duration of ~100 msec. Cooling durations between scans of 1.6, 4.0, and 8.0 sec were studied in vitro. A 5-mm-diameter laser spot was used with the power kept constant at 10 W. Thermal images were obtained at 30 frames per second with a thermal camera detecting 3-5 μm radiation. Surface temperatures were recorded at 0, 1, and 6 mm from the center line of the incision. Results/Conclusions: Cooling durations of 1.6 and 4.0 seconds in vitro resulted in temperatures at the weld site that remained above ~65°C for prolonged periods of time. Cooling durations of 8.0 seconds were sufficient both in vitro and in vivo to prevent a significant rise in baseline temperatures at the weld site over time.

AB - Background and Objective: A thermal camera was used to measure surface temperatures during laser skin welding to provide feedback for optimization of the laser parameters. Study Design/Materials and Methods: Two-centimeter- long, full-thickness incisions were made in guinea pig skin in vitro and in vivo. India ink was applied to the incision edges, which were then mechanically apposed. Continuous-wave, 1.06-μm Nd:YAG laser radiation was scanned over the incisions, producing an effective pulse duration of ~100 msec. Cooling durations between scans of 1.6, 4.0, and 8.0 sec were studied in vitro. A 5-mm-diameter laser spot was used with the power kept constant at 10 W. Thermal images were obtained at 30 frames per second with a thermal camera detecting 3-5 μm radiation. Surface temperatures were recorded at 0, 1, and 6 mm from the center line of the incision. Results/Conclusions: Cooling durations of 1.6 and 4.0 seconds in vitro resulted in temperatures at the weld site that remained above ~65°C for prolonged periods of time. Cooling durations of 8.0 seconds were sufficient both in vitro and in vivo to prevent a significant rise in baseline temperatures at the weld site over time.

KW - Infrared radiation

KW - Thermal camera

KW - Tissue welding

UR - http://www.scopus.com/inward/record.url?scp=0032718044&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032718044&partnerID=8YFLogxK

U2 - 10.1002/(SICI)1096-9101(1999)25:4<291::AID-LSM4>3.0.CO;2-#

DO - 10.1002/(SICI)1096-9101(1999)25:4<291::AID-LSM4>3.0.CO;2-#

M3 - Article

C2 - 10534746

AN - SCOPUS:0032718044

VL - 25

SP - 291

EP - 303

JO - Lasers in Surgery and Medicine

JF - Lasers in Surgery and Medicine

SN - 0196-8092

IS - 4

ER -