Measurement of the elastic modulus of rabbit nasal septal cartilage during Nd:YAG (lambda = 1.32 microm) laser irradiation.

Abstract:

BACKGROUND AND OBJECTIVES:The objective of this study was to quantitatively measure changes in the elastic moduli of rabbit nasal septal cartilage during laser heating. While the efficacy of laser cartilage reshaping has been established for use in nasal surgery, few studies have investigated the temperature-dependent viscoelastic behavior of cartilage. STUDY DESIGN/MATERIALS AND METHODS:Cyclic force versus displacement curves were generated during the Nd:YAG laser (lambda = 1.32 microm, 10 second exposure time, 21.22 W/cm2) irradiation of cartilage specimens secured in cantilevered geometry. Samples were irradiated three times with 30 second cooling intervals between each laser exposure. Measurements were recorded before, during, and after laser irradiation, and then following complete rehydration in normal saline (NS) for 1 hour at 25 degrees C. Elastic modulus was calculated assuming linear viscoelastic behavior. RESULTS:The elastic modulus in native tissue decreased during and after successive laser exposures from about 6 to 3.5 MPa. After rehydration, the modulus returned to near-baseline value. Surface temperature reached a maximum of 65 degrees C. CONCLUSIONS:The laser irradiation of cartilage using parameters similar to those used in reshaping does not produce significant irreversible changes in the mechanical properties of the tissue. Measurement of the elastic modulus is an effective means of characterizing alterations in cartilage mechanical behavior during and after laser heating.

journal_name

Lasers Surg Med

authors

Chao KK,Ho KH,Wong BJ

doi

10.1002/lsm.10176

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

377-83

issue

5

eissn

0196-8092

issn

1096-9101

journal_volume

32

pub_type

杂志文章
  • Microwave thermolysis of sweat glands.

    abstract:BACKGROUND AND OBJECTIVES:Hyperhidrosis is a condition that affects a large percentage of the population and has a significant impact on peoples' lives. This report presents a technical overview of a new noninvasive, microwave-based device for creating thermolysis of sweat glands. The fundamental principles of operatio...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.21142

    authors: Johnson JE,O'Shaughnessy KF,Kim S

    更新日期:2012-01-01 00:00:00

  • 193 nm excimer laser ablation of bone.

    abstract::The argon fluoride excimer laser is investigated as a cutting-ablating tool for bone surgery. Quantitative measurements are presented for various fluences of laser energy and number of pulses. Histological data are presented that demonstrate the minimal damage to the surrounding material from the laser interaction. Co...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.1900110111

    authors: Lustmann J,Ulmansky M,Fuxbrunner A,Lewis A

    更新日期:1991-01-01 00:00:00

  • Fine structure of zonal changes in experimental Nd:YAG laser-induced interstitial hyperthermia.

    abstract::Interstitial thermotherapy using Nd:YAG-laser induced hyperthermia is a new stereotactic method for the treatment of brain tumors in poorly accessible regions. To provide a basis for the underlying tissue alterations, we have analyzed the spatial and temporal pattern of interstitial laser hyperthermia lesions in the n...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.1900130212

    authors: Schober R,Bettag M,Sabel M,Ulrich F,Hessel S

    更新日期:1993-01-01 00:00:00

  • Effect of an Er:YAG laser on periodontally involved root surfaces: an in vivo and in vitro SEM comparison.

    abstract:BACKGROUND AND OBJECTIVE:The recently introduced Er:YAG laser seems to be a promising alternative in periodontal treatment due to its thermo-mechanical ablation mechanism. The present study attempted to compare the effects of an Er:YAG laser on periodontally involved root surfaces at different power settings in vivo an...

    journal_title:Lasers in surgery and medicine

    pub_type: 临床试验,杂志文章

    doi:10.1002/lsm.1125

    authors: Schwarz F,Pütz N,Georg T,Reich E

    更新日期:2001-01-01 00:00:00

  • Photodynamic therapy (PDT) of the ciliary body with silicon naphthalocyanine (SINc) in rabbits.

    abstract:BACKGROUND AND OBJECTIVE:To investigate silicone naphthalocyanine (SINc; 0.5 mg/kg) for photodynamic therapy (PDT) of the ciliary body in pigmented rabbits. STUDY DESIGN/MATERIALS AND METHODS:SINc was dissolved in canola oil by heating, emulsified with Tween-80, and given by ear vein. Pharmacokinetics were studied in ...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/(SICI)1096-9101(1996)18:1<86::AID-LSM11>3.

    authors: Hill RA,Garrett J,Reddi S,Esterowitz T,Liaw LH,Ryan J,Shirk J,Kenney M,Shimuzu S,Berns MW

    更新日期:1996-01-01 00:00:00

  • Recanalization of occluded biliary endoprostheses with pulsed laser radiation.

    abstract::The use of pulsed laser radiation to recanalize occluded biliary endoprostheses was examined. In vitro measurements demonstrated that a repetitively pulsed organic dye laser transmitted through a small diameter quartz fiber can recanalize an occluded stent in less than 10 sec without causing visible damage to the sten...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.1900070503

    authors: Nishioka NS,Kelsey PB,Kibbi AG,Mihm MC Jr,Anderson RR

    更新日期:1987-01-01 00:00:00

  • Binding of indocyanine green in polycaprolactone fibers using blend electrospinning for in vivo laser-assisted vascular anastomosis.

    abstract:BACKGROUND AND OBJECTIVE:The clinical application of laser-assisted vascular anastomosis is afflicted by unreliable and low bonding strengths as well as tedious handling during microvascular surgery. The challenge to be met arises from the flow-off of the chromophore during soldering that changes the absorption and sta...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.22701

    authors: Schönfeld A,Kabra ZM,Constantinescu M,Bosshardt D,Stoffel MH,Peters K,Frenz M

    更新日期:2017-12-01 00:00:00

  • Fractionated bipolar radiofrequency and bipolar radiofrequency potentiated by infrared light for treating striae: A prospective randomized, comparative trial with objective evaluation.

    abstract:BACKGROUND AND OBJECTIVE:Very few treatments for striae are based on prospective randomized trials. The objective of this study was to assess the efficacy of bipolar fractional radiofrequency and bipolar radiofrequency potentiated with infrared light, alone or combined, for treating abdominal stretch marks. STUDY DESI...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章,多中心研究,随机对照试验

    doi:10.1002/lsm.22458

    authors: Harmelin Y,Boineau D,Cardot-Leccia N,Fontas E,Bahadoran P,Becker AL,Montaudié H,Castela E,Perrin C,Lacour JP,Passeron T

    更新日期:2016-03-01 00:00:00

  • Induction of fat apoptosis by a non-thermal device: Mechanism of action of non-invasive high-intensity electromagnetic technology in a porcine model.

    abstract:OBJECTIVES:While controlled thermal changes in subcutaneous tissue have been used to trigger apoptosis of fat cells and have been proven clinically efficacious, another mechanism of electromagnetic stress suggests that fat apoptosis could be achieved by a non-thermal manner as well. This animal model study investigates...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.23039

    authors: Weiss RA,Bernardy J

    更新日期:2019-01-01 00:00:00

  • A Prospective Study in the Treatment of Lentigines in Asian Skin Using 532 nm Picosecond Nd:YAG Laser.

    abstract:BACKGROUND AND OBJECTIVE:To evaluate safety and efficacy of treatment with the picosecond Nd:YAG 532 nm for lentigines in Asian skin. STUDY DESIGN/MATERIALS AND METHODS:This was a prospective, open-label cohort study, using a novel picosecond 532-nm laser for the treatment of facial lentigines. Subjects received up to...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.23103

    authors: Chan MWM,Shek SY,Yeung CK,Chan HH

    更新日期:2019-11-01 00:00:00

  • Treatment of distal ureteral tumors using endoscopic argon photoirradiation.

    abstract::This is the first report on the use of endoscopic argon photoirradiation to treat patients with low-grade ureteral tumors involving the distal ureter. Using a rigid ureteropyeloscope, a 300 mu or 600 mu quartz fiber, and 5 watts (W) of power in a continuous-wave mode, the lesions were ablated without complication. Pat...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.1900120506

    authors: Johnson DE

    更新日期:1992-01-01 00:00:00

  • Optical coherence tomography as a method to identify parathyroid glands.

    abstract:BACKGROUND AND OBJECTIVE:The identification of parathyroid glands can be a major problem in parathyroid surgery. The purpose of this study was to evaluate the feasibility of optical coherence tomography (OCT) in distinguishing between parathyroid tissue, thyroid tissue, lymph nodes, and adipose tissue. METHODS:Ex vivo...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.22195

    authors: Ladurner R,Hallfeldt KK,Al Arabi N,Stepp H,Mueller S,Gallwas JK

    更新日期:2013-12-01 00:00:00

  • Phototoxic effect of photodynamic therapy on lung cancer cells grown as a monolayer and three dimensional multicellular spheroids.

    abstract:BACKGROUND AND OBJECTIVE:Photodynamic therapy (PDT) is a minimally invasive therapeutic modality for the treatment of neoplastic and non-neoplastic diseases. The photochemical interaction of light, photosensitizer (PS) and molecular oxygen produces singlet oxygen which induces cell death. The effectiveness of zinc sulf...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.22121

    authors: Manoto SL,Houreld NN,Abrahamse H

    更新日期:2013-03-01 00:00:00

  • Thermal modelling of micropulsed diode laser retinal photocoagulation.

    abstract:BACKGROUND AND OBJECTIVE:Recent studies have sought to utilize diode laser "micropulsing" in order to preserve therapeutic efficacy of retinal photocoagulation while minimizing pain and subjacent tissue injury. A model for the transient thermal tissue response to continuous and micropulsed diode laser output is present...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/(sici)1096-9101(1997)20:4<409::aid-lsm6>3.

    authors: Berger JW

    更新日期:1997-01-01 00:00:00

  • Treatment of leg veins with combined pulsed dye and Nd:YAG lasers: 60 patients assessed at 6 months.

    abstract:INTRODUCTION:Leg telangiectasias have been reported to have been treated with a variety of lasers. This study was designed to measure response to treatment of leg telangiectasias with a unique coupled 585 nm and 1064 nm pulse. METHODS:Sixty female patients (24-62 y.o., skin types II-IV) with leg vein varicosities were...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.20972

    authors: Trelles MA,Weiss R,Moreno-Moragas J,Romero C,Vélez M,Alvarez X

    更新日期:2010-11-01 00:00:00

  • Electronic device generated light increases reactive oxygen species in human fibroblasts.

    abstract:OBJECTIVES:Our skin is constantly exposed to light from solar radiation and electronic devices, which impact skin physiology and aging. The biological altering properties of ultraviolet (UV) solar radiation on skin have been well established. There is significant scientific and public interest on the effects of electro...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.22794

    authors: Austin E,Huang A,Adar T,Wang E,Jagdeo J

    更新日期:2018-02-05 00:00:00

  • Safety and Efficacy of a Non-Invasive High-Intensity Focused Electromagnetic Field (HIFEM) Device for Treatment of Urinary Incontinence and Enhancement of Quality of Life.

    abstract:BACKGROUND AND OBJECTIVES:Urinary incontinence is a common and distressing condition which interferes with everyday life. Patients frequently experience discomfort related to urine leakage and the subsequent need to use absorbent pads. Since the continence mechanism is primarily maintained by a proper function of pelvi...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章,多中心研究

    doi:10.1002/lsm.23106

    authors: Samuels JB,Pezzella A,Berenholz J,Alinsod R

    更新日期:2019-11-01 00:00:00

  • Efficacy of different therapy regimes of low-power laser in painful osteoarthritis of the knee: a double-blind and randomized-controlled trial.

    abstract:BACKGROUND AND OBJECTIVES:A prospective, double-blind, randomized, and controlled trial was conducted in patients with knee osteoarthritis (OA) to evaluate the efficacy of infrared low-power Gallium-Arsenide (Ga-As) laser therapy (LPLT) and compared two different laser therapy regimes. STUDY DESIGN/MATERIALS AND METHO...

    journal_title:Lasers in surgery and medicine

    pub_type: 临床试验,杂志文章,随机对照试验

    doi:10.1002/lsm.10236

    authors: Gur A,Cosut A,Sarac AJ,Cevik R,Nas K,Uyar A

    更新日期:2003-01-01 00:00:00

  • ED50 study of femtosecond terawatt laser pulses on porcine skin.

    abstract:BACKGROUND AND OBJECTIVES:Terawatt (TW) lasers have become commonplace since the development of the chirped-pulse amplification method using Ti:sapphire and Nd:glass laser rods. We have measured the minimum visible lesion (MVL) thresholds for porcine1The animals involved in this study were procured, maintained, and use...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.20195

    authors: Kumru SS,Cain CP,Noojin GD,Cooper MF,Imholte ML,Stolarski DJ,Cox DD,Crane CC,Rockwell BA

    更新日期:2005-07-01 00:00:00

  • Targeting of sebaceous glands to treat acne by micro-insulated needles with radio frequency in a rabbit ear model.

    abstract:BACKGROUND AND OBJECTIVES:Many studies have investigated the application of micro-insulated needles with radio frequency (RF) to treat acne in humans; however, the use of a micro-insulated needle RF applicator has not yet been studied in an animal model. The purpose of this study was to evaluate the effectiveness of a ...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.22599

    authors: Kwon TR,Choi EJ,Oh CT,Bak DH,Im SI,Ko EJ,Hong HK,Choi YS,Seok J,Choi SY,Ahn GY,Kim BJ

    更新日期:2017-04-01 00:00:00

  • Closure of rabbit ileum enterotomies with the argon and CO2 lasers: bursting pressures and histology.

    abstract::In this study, we examined short-term strength and histology of experimental argon and CO2 laser-welded and control-sutured enterotomies in a rabbit model. Longitudinal 1.0-cm enterotomies were closed with the argon laser at 0.5 (n = 10) or 1.0 (n = 10) W power and a spot diameter of 2.8 mm resulting in energy fluence...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.1900080513

    authors: Vlasak JW,Kopchok GE,White RA

    更新日期:1988-01-01 00:00:00

  • Ultrastructural changes elicited by a non-ablative wrinkle reduction laser.

    abstract:BACKGROUND AND OBJECTIVES:Cosmeceuticals, chemical peels and collagen injections are used to rejuvenate skin, but none of these methods is effective or permanent. Recently, laser resurfacing has been found to be effective, but the incidence of side effects is relatively high. Two years ago, the non-ablative wrinkle red...

    journal_title:Lasers in surgery and medicine

    pub_type: 临床试验,杂志文章

    doi:10.1002/lsm.10119

    authors: Omi T,Kawana S,Sato S,Honda M

    更新日期:2003-01-01 00:00:00

  • Cryolipolysis for safe and effective inner thigh fat reduction.

    abstract:BACKGROUND AND OBJECTIVES:While cryolipolysis initially received FDA clearance for fat reduction in the abdomen and flanks, there was significant interest in non-surgical fat reduction for other sites, such as the inner and outer thighs. This article reports the results of an inner thigh study which contributed to FDA ...

    journal_title:Lasers in surgery and medicine

    pub_type: 临床试验,杂志文章,多中心研究

    doi:10.1002/lsm.22320

    authors: Zelickson BD,Burns AJ,Kilmer SL

    更新日期:2015-02-01 00:00:00

  • Photodynamic antimicrobial chemotherapy (PACT) using phenothiazine derivatives as photosensitizers against Leishmania braziliensis.

    abstract:BACKGROUND AND OBJECTIVE:Cutaneous and mucocutaneous leishmaniasis are diseases characterized by skin or mucosal manifestations. In the new world, Leishmania braziliensis is the main etiological agent of cutaneous leishmaniasis, condition that may evolve to the mucocutaneous form. The therapeutic arsenal routinely empl...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.22099

    authors: Barbosa AF,Sangiorgi BB,Galdino SL,Barral-Netto M,Pitta IR,Pinheiro AL

    更新日期:2012-12-01 00:00:00

  • MRI guided interstitial laser therapy in a rat malignant glioma model.

    abstract::We have used MR monitoring to guide and evaluate the effects of the Nd:YAG interstitial laser on a well-characterized rat brain tumor model (C6). MRI was used to determine the tumor size, verify the location of the interstitial probe, and evaluate the size and location of the laser-induced lesion during and after trea...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.1900130502

    authors: el-Ouahabi A,Guttmann CR,Hushek SG,Bleier AR,Dashner K,Dikkes P,Black PM,Jolesz FA

    更新日期:1993-01-01 00:00:00

  • Evaluation of a transparent perfluorodecalin-infused patch as an adjunct to laser-assisted tattoo removal: A pivotal trial.

    abstract:BACKGROUND AND OBJECTIVE:Laser-assisted treatment of tattoos is well recognized to produce opaque epidermal whitening that prevents multiple sequential passes during a single treatment session. The amount of epidermal whitening produced in association with the procedure can be minimized by topical application of perflu...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章,随机对照试验

    doi:10.1002/lsm.22659

    authors: Biesman BS,Costner C

    更新日期:2017-04-01 00:00:00

  • Treatment of vitiligo by 308-nm excimer laser: an evaluation of variables affecting treatment response.

    abstract:BACKGROUND AND OBJECTIVES:To determine the true efficacy of the 308-nm excimer laser for the treatment of vitiligo, while taking into account confounding factors such as anatomic site of treatment, age, sex, skin type, MED, and duration of evolution of the vitiligo. STUDY DESIGN/MATERIALS AND METHODS:Thirty-five patie...

    journal_title:Lasers in surgery and medicine

    pub_type: 临床试验,杂志文章

    doi:10.1002/lsm.20057

    authors: Ostovari N,Passeron T,Zakaria W,Fontas E,Larouy JC,Blot JF,Lacour JP,Ortonne JP

    更新日期:2004-01-01 00:00:00

  • Effect of CO2 laser irradiation on experimental fracture healing: a transmission electron microscopic study.

    abstract::The healing of standardized fracture of rabbit radius was expedited as a result of treatment with low-power CO2 laser irradiation. Observation with transmission electron microscope revealed the following favorable effects of CO2 laser irradiation: The red blood cells were induced to disintegrate, thus promoting the ab...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.1900060309

    authors: Tang XM,Chai BP

    更新日期:1986-01-01 00:00:00

  • Photobiomodulation with polychromatic light increases zone 4 survival of transverse rectus abdominis musculocutaneous flap.

    abstract:OBJECTIVE:The aim of this study was to evaluate the effect of relatively novel approach of application of polychromatic light waves on flap survival of experimental musculocutaneous flap model and to investigate efficacy of this modality as a delay procedure to increase vascularization of zone 4 of transverse rectus ab...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.23063

    authors: Calis M,Demirtas TT,Sert G,Irmak G,Gumusderelioglu M,Turkkani A,Çakar AN,Ozgur F

    更新日期:2019-08-01 00:00:00

  • Transscleral optical coherence tomography--an experimental study in ex-vivo human eyes.

    abstract:BACKGROUND AND OBJECTIVE:To evaluate the potentials of a 1310-nm optical coherence tomography (OCT) system to penetrate the highly backscattering sclera in enucleated human eyes and provide visualization of intraocular structures by transscleral imaging. STUDY DESIGN/MATERIALS AND METHODS:OCT-images were generated by ...

    journal_title:Lasers in surgery and medicine

    pub_type: 杂志文章

    doi:10.1002/lsm.10031

    authors: Hoerauf H,Winkler J,Scholz C,Wirbelauer C,Gordes RS,Koch P,Engelhardt R,Laqua H,Birngruber R

    更新日期:2002-01-01 00:00:00