Dr. Lloyd P. Tate Profile

Dr. Lloyd P. Tate

Prof. of Equine Surgery at North Carolina State Univ

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 22 February 2006 Paper

Transendoscopic application of CO₂ laser irradiation using the OmniGuide fiber to treat dorsal displacement of the soft palate in the horse

Lloyd Tate

Proceedings Volume 6078, 607839 (2006) https://doi.org/10.1117/12.657602

KEYWORDS: Gas lasers, Carbon monoxide, Laser therapeutics, Fiber lasers, Semiconductor lasers, Endoscopy, Surgery, Laser tissue interaction, Fiber coupled lasers, Laser vision correction

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Proceedings Article | 25 April 2005 Paper

Transendoscopic application of CO₂ laser irradiation using the OmniGuide fiber

Lloyd Tate, Yvonne Elce

Proceedings Volume 5686, (2005) https://doi.org/10.1117/12.579869

KEYWORDS: Gas lasers, Carbon monoxide, Fiber lasers, Laser therapeutics, Surgery, Semiconductor lasers, Laser tissue interaction, Tissues, Endoscopes, Laser irradiation

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Proceedings Article | 25 April 2005 Paper

A guide for calculation of spot size to determine power density for free fiber irradiation of tissue

Lloyd Tate, Anthony Blikslager

Proceedings Volume 5686, (2005) https://doi.org/10.1117/12.579868

KEYWORDS: Semiconductor lasers, Fiber lasers, Neodymium, YAG lasers, Tissues, Laser tissue interaction, Laser therapeutics, Medicine, Cameras, Manufacturing

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Proceedings Article | 13 July 2004 Paper

Transendoscopic laser ablation of upper respiratory cysts in 12 horses, 1993-2003

Lloyd Tate

Proceedings Volume 5312, (2004) https://doi.org/10.1117/12.530934

KEYWORDS: Neodymium, Laser ablation, Nd:YAG lasers, YAG lasers, Laser therapeutics, Semiconductor lasers, Radiography, Endoscopy, Surgery, Visualization

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Proceedings Article | 17 June 2002 Paper

Evaluation of topical application of indocyanine green (ICG) to enhance penetration of the 810-nm diode laser on equine respiratory tissue

Lloyd Tate, Anthony Blikslager, Lucas Giraldo

Proceedings Volume 4609, (2002) https://doi.org/10.1117/12.431788

KEYWORDS: Semiconductor lasers, Neodymium, YAG lasers, Laser tissue interaction, Nd:YAG lasers, Laser irradiation, Fiber lasers, Laser cutting, Indocyanine green, Computed tomography

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The Neodynium: Yttrium Aluminum Garnet (Nd: YAG) laser has been the most frequently used laser in correcting equine upper respiratory disorders.'4 Evaluation of this laser and several other lasers' ability to penetrate tissues is based on in vitro studies using portions of the arytenoid cartilage and the nasal septum.5 The parameters measured have routinely been the depth and width of the crater created by laser irradiation of the tissue.5 Previous studies, now considered the standard, have used a power output of 200 joules to create a measurable crater in order to make comparisons.5'6 The initial method of measurement consists of standard histological preparation followed by microscopic evaluation. This has been compared to computed tomography which has been determined to be as accurate.5'6 In a more recent study, we compared the 980nm and 810nm diode lasers producing a total power output of 20 watts, to the Nd: YAG laser.7 As demonstrated, both diode lasers can potentially be used as a substitute for the Nd: YAG laser.7 Our study also indicated that intravenous administration of indocyanine green (ICG) greatly enhanced the depth and width of crater formation in equine respiratory tissue with the laser set at 200 joules total power output.7 Intravenous administration of ICG was found to be an expensive protocol, therefore, the current study was devised to determine the penetration parameters of ICG after topical administration. The evaluation consisted of comparing depths and widths of penetration measured by computed tomography technique after ICG was topically sprayed on the tissue with solution concentrations ranging from 0. 1 % to 1%. The study's results demonstrated that topical application of ICG greater than or equal to 0.5% solution produced a depth ofpenetration significantly greater (p>0.05) than that ofthe Nd: YAG laser. The width measurements of craters created by the diode laser irradiation were found to be significantly less than those produced by the Nd: YAG laser. It was concluded that topical administration of ICG was more economical than intravenous administration.

Proceedings Article | 17 June 2002 Paper

Determination of noncontact penetration parameters of the 60-W 810-nm diode laser on equine respiratory tissue

Lucas Giraldo, Lloyd Tate, Anthony Blikslager

Proceedings Volume 4609, (2002) https://doi.org/10.1117/12.431789

KEYWORDS: Semiconductor lasers, Neodymium, YAG lasers, Laser tissue interaction, Tissues, Nd:YAG lasers, Laser irradiation, Fiber lasers, Computed tomography, Laser therapeutics

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The Neodynium: Yttrium Aluminum Garnet (Nd: YAG) laser was one ofthe first lasers to allow tissue photoablation to be performed transendoscopically in the standing equine patient.1 It became very popular due to the fact that its irradiation can be applied through flexible fiber optic cables. Recently, a number of diode lasers have been marketed to the equine practitioner as replacements for the Nd: YAG laser, specifically the 810nm and 980nm diode lasers. Initially, both of these lasers produced a maximum of 20 watts total power output. Currently, higher power output versions being 50 or 60 watts are available to the practitioner. Producing a high power output means these lasers have the potential to be used in the non-contact configuration, as well as contact, when performing corrections of upper respiratory disorders ofthe horse. Penetration studies have been performed using lower power (20 watt) 810nm and 980nm diode laser which were compared to the depths and widths of penetration produced by the Nd: YAG laser.2,3 The purpose of this investigation was to evaluate the 60 watt 810nm diode lasers penetration delivering 200-600 joules on to equine respiratory tissue. Penetration parameters selected were width and depth of craters and were compared to the Nd: YAG laser set to deliver 200 joules of energy. This study determined that the 810nm diode lasers penetration parameter is close to that of the Nd: YAG laser. As the diode laser power output increased above 200 joules, it significantly penetrated respiratory tissue deeper than the Nd: YAG laser set at 200 joules output. Measurement of the crater depth created by the 810nm diode laser as its output power was increased at 100 joule increments was significantly deeper than the depth of crater formed by the previous power setting. Similarly, the diode laser's crater top and bottom width measurement, at 400 joules and greater, was significantly greater than or equal to that of the Nd: YAG lasers set to deliver 200 joules of energy. This investigation provided evidence that the 60 watt 810nm diode laser produces substantial penetration that can be applied not only in the contact mode successfully, but also in the non-contact mode providing the practitioner with a more versatile laser for transendoscopic application in the equine.

Proceedings Article | 21 May 2001 Paper

Preliminary report: comparison of 980-nm, 808-nm diode laser enhanced with indocyanine green to the Nd:YAG laser applied to equine respiratory tissue

Lloyd Tate, Anthony Blikslager, Nigel Campbell

Proceedings Volume 4244, (2001) https://doi.org/10.1117/12.427772

KEYWORDS: Semiconductor lasers, Nd:YAG lasers, Laser tissue interaction, Fiber lasers, Indocyanine green, Laser therapeutics, Diodes, Laser vision correction, Laser cutting, Computed tomography

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Proceedings Article | 17 May 2000 Paper

Pilot study: intravenous use of indocyanine green as an enhancer for 808-nm diode laser application in the equine

Lloyd Tate, Anthony Blikslager, Mark Papich

Proceedings Volume 3907, (2000) https://doi.org/10.1117/12.386286

KEYWORDS: Nd:YAG lasers, Semiconductor lasers, Laser tissue interaction, Indocyanine green, Laser therapeutics, Fiber lasers, Laser cutting, Laser irradiation, Laser energy, Pulmonary disorders

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Proceedings Article | 22 June 1999 Paper

Clinical update: transendoscopic laser surgery for treatment of epiglottic entrapment: Nd:YAG and 808-nm diode laser applied individually and in combination

Lloyd Tate, R. Tudor

Proceedings Volume 3590, (1999) https://doi.org/10.1117/12.350980

KEYWORDS: Semiconductor lasers, Neodymium, Nd:YAG lasers, YAG lasers, Fiber lasers, Laser therapeutics, Endoscopy, Endoscopes, Diodes, Tissues

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Proceedings Article | 1 July 1998 Paper

Development of a model to evaluate laser penetration in the equine using the Nd:YAG laser as a standard

Lloyd Tate, Anthony Blikslager, Paul Mickel

Proceedings Volume 3245, (1998) https://doi.org/10.1117/12.312311

KEYWORDS: Laser tissue interaction, Cartilage, Tissues, Nd:YAG lasers, Computed tomography, In vivo imaging, Laser irradiation, Fiber lasers, Standards development, Statistical analysis

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Proceedings Article | 1 July 1998 Paper

Nd:YAG photovaporization of residual equine guttural-pouch mycotic lesions after internal carotid occlusion

Lloyd Tate, R. Tudor, Edwina Little

Proceedings Volume 3245, (1998) https://doi.org/10.1117/12.312313

KEYWORDS: Nd:YAG lasers, Arteries, Surgery, Endoscopy, Laser therapeutics, Medicine, Laser vision correction, Inflammation, Blood, Pulmonary disorders

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Proceedings Article | 22 May 1997 Paper

Transendoscopic Nd:YAG ablation of cystic lesions in 27 large animals: 1986-1995

Lloyd Tate

Proceedings Volume 2970, (1997) https://doi.org/10.1117/12.275045

KEYWORDS: Laser therapeutics, Surgery, Nd:YAG lasers, Laser vision correction, Uterus, Fiber lasers, Laser ablation, Endoscopy, Carbon dioxide lasers, Medicine

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Proceedings Article | 17 May 1996 Paper

Review of treatment of upper airway obstruction caused by various masses both malignant and nonmalignant in the horse using transendoscopic Nd:YAG laser application for treatment

Lloyd Tate, Edwina Little

Proceedings Volume 2671, (1996) https://doi.org/10.1117/12.240004

KEYWORDS: Laser therapeutics, Surgery, Laser vision correction, Endoscopy, Nd:YAG lasers, Laser tissue interaction, Laser ablation, Biopsy, Pulmonary disorders, Laser irradiation

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Proceedings Article | 12 May 1995 Paper

Carbon dioxide (CO2) laser treatment of bovine penile persistent frenulum and fibropapillomas

Lloyd Tate

Proceedings Volume 2395, (1995) https://doi.org/10.1117/12.209074

KEYWORDS: Penis, Laser therapeutics, Carbon dioxide lasers, Gas lasers, Surgery, Laser tissue interaction, Carbon dioxide, Carbon monoxide, Medicine, Inspection

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Proceedings Article | 7 September 1994 Paper

Comparison between surgical and standing percutaneous contact Nd:YAG laser periosteal transection for potential treatment of equine limb deformities

Lloyd Tate, Steven Baines, Donald Meuten, J. Stefanacci

Proceedings Volume 2128, (1994) https://doi.org/10.1117/12.184942

KEYWORDS: Laser therapeutics, Surgery, Bone, Fiber lasers, Nd:YAG lasers, Skin, Laser vision correction, Tissues, Laser energy, Laser tissue interaction

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Proceedings Article | 21 July 1993 Paper

In-vitro evaluation of three lasers for the potential treatment of equine pharyngeal lymphoid hyperplasia

Lloyd Tate, Diann Weddle, Maria Correa

Proceedings Volume 1880, (1993) https://doi.org/10.1117/12.148339

KEYWORDS: Argon ion lasers, Lymphatic system, Nd:YAG lasers, Carbon dioxide lasers, Tissues, In vitro testing, Laser tissue interaction, Head, Spherical lenses, Fiber lasers

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Proceedings Article | 1 June 1992 Paper

Comparison of the effectiveness of one- and two-suture prosthesis used to correct left laryngeal hemiplegia in the equine: followed by Nd:YAG laser ventricle ablation

Cindy Burnett, Lloyd Tate, Maria Correa

Proceedings Volume 1643, (1992) https://doi.org/10.1117/12.137337

KEYWORDS: Nd:YAG lasers, Laser ablation, Medicine, Aluminum, Garnet, Laser therapeutics, Statistical analysis, Denoising, Endoscopy, Cartilage

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Proceedings Article | 1 June 1992 Paper

Study of the efficacy of prosthetic laryngoplasty followed by Nd:YAG laser ventricular ablation for treatment of left laryngeal hemiplegia in the horse

Brenda Lam, Lloyd Tate, Maria Correa

Proceedings Volume 1643, (1992) https://doi.org/10.1117/12.137339

KEYWORDS: Surgery, Nd:YAG lasers, Cartilage, Laser therapeutics, Laser ablation, Endoscopy, Medicine, Tolerancing, Nerve, Veins

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Proceedings Article | 1 May 1991 Paper

Six years of transendoscopic Nd:YAG application in large animals

Lloyd Tate, Mardi Glasser

Proceedings Volume 1424, (1991) https://doi.org/10.1117/12.44008

KEYWORDS: Laser irradiation, Nd:YAG lasers, Endoscopy, Medicine, Laser therapeutics, Surgery, Laser tissue interaction, Fiber lasers, Endoscopes, Tissues

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Showing 5 of 19 publications

Proceedings Volume Editor (17)

SPIE Conference Volume | 15 February 2006

Photonic Therapeutics and Diagnostics II

SPIE Conference Volume | 25 April 2005

Photonic Therapeutics and Diagnostics

SPIE Conference Volume | 13 July 2004

Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XIV

SPIE Conference Volume | 17 June 2002

Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XII

SPIE Conference Volume | 17 June 2002

Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems XII

Showing 5 of 17 publications

Conference Committee Involvement (17)

Biophotonics in Veterinary Medicine

23 January 2006 | San Jose, California, United States

Biophotonics in Veterinary Medicine

24 January 2005 | San Jose, CA, United States