A Comparison of Wavelength Dependence for Laser-assisted Lipolysis Effect Using Monte Carlo Simulation

Youn, Jong-In

doi:10.3807/josk.2009.13.2.267

Cited by 6 publications

(5 citation statements)

References 11 publications

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“…fiber tip) at 1,444 nm [15]. Evaluation of the thermal diffusion characteristics of 1,064, 1,320, and 1,444 nm lipolysis lasers with video thermography and external temperature monitoring is consistent with this mathematical model—thermal spread (Fig.…”

Section: Discussionsupporting

confidence: 58%

Ablation efficiency and relative thermal confinement measurements using wavelengths 1,064, 1,320, and 1,444 nm for laser-assisted lipolysis

Youn

Holcomb²

2012

Lasers Med Sci

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Laser-assisted lipolysis is routinely used for contouring the body and the neck while modifications of the technique have recently been advocated for facial contouring. In this study, wavelength-dependence measurements of laser lipolysis effect were performed using different lasers at 1,064, 1,320, and 1,444 nm wavelengths that are currently used clinically. Fresh porcine skin with fatty tissue was used for the experiments with radiant exposure of 5–8 W with the same parameters (beam diameter = 600 μm, peak power = 200 mJ, and pulse rate = 40 Hz) for 1,064, 1,320 and 1,444 nm laser wavelengths. After laser irradiation, ablation crater depth and width and tissue mass loss were measured using spectral optical coherence tomography and a micro-analytical balance, respectively. In addition, thermal temporal monitoring was performed with a thermal imaging camera placed over ex vivo porcine fat tissue; temperature changes were recorded for each wavelength. This study demonstrated greatest ablation crater depth and width and mass removal in fatty tissue at the 1,444 nm wavelength followed by, in order, 1,320 and 1,064 nm. In the evaluation of heat distribution at different wavelengths, reduced heat diffusion was observed at 1,444 nm. The ablation efficiency was found to be dependent upon wavelength, and the 1,444 nm wavelength was found to provide both the highest efficiency for fatty tissue ablation and the greatest thermal confinement.

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Section: Discussionsupporting

confidence: 58%

Ablation efficiency and relative thermal confinement measurements using wavelengths 1,064, 1,320, and 1,444 nm for laser-assisted lipolysis

Youn

Holcomb²

2012

Lasers Med Sci

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“…Three patients were satisfied with excellent improvement, and two patients experienced good improvement (see Table 1). The technique seems to result in a much shorter healing time [15][16][17][18]. The relative delicacy of the technique also makes it eminently suitable for use in areas previously considered difficult, such as those of the face.…”

Section: Resultsmentioning

confidence: 99%

“…The technique seems to result in a much shorter healing time [ 15 , 16 , 17 , 18 ]. The relative delicacy of the technique also makes it eminently suitable for use in areas previously considered difficult, such as those of the face.…”

Section: Resultsmentioning

confidence: 99%

Novel Management of Granuloma Formation Secondary to Dermal Filler with Intralesional 1444 nm Nd:YAG Laser Technique

Piccolo,

Mutlag,

Pieri

et al. 2023

Medicina

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Background: Dermal fillers for soft tissue for the treatment of face sagging, volume loss, and wrinkles have become popular among patients of all ages and ethnicities, and their use is becoming increasingly widespread. Aim: the goal of this study was to evaluate the effectiveness and safety of a micro-pulsed, 1444 nm Nd:YAG laser on dermal filler complications, in particular on granuloma management. Methods: A subcutaneous, 1444 nm Nd:YAG laser was used on five female patients (range age 52–68 years) with hyaluronic filler granulomas located on the face (two on the cheek area and three on the lips); three patients had self-injected the filler, buying it online. Before and after the therapy, the patients received a skin ultrasound to determine the form and location of the granulomas and to determine if there had been a full or partial resolution. During this study, all possible adverse effects at the treatment site were monitored. The 5-point Global Aesthetic Improvement Scale (GAIS) (0 point—no change; 1 point—25%, mild improvement; 2 points—50%, moderate improvement; 3 points—75%, good improvement; 4 points—100%, excellent improvement) was recorded at a 3-month follow-up. Results: good results were obtained in the treatment of filler granulomas with the intralesional 1444 nm laser, even if just a single treatment was performed (one intervention was effective for curing granulomas up to 5 mm in diameter). Three patients were satisfied with excellent improvement, and two patients experienced good improvement. The results are functional and aesthetically satisfying, as shown by photographic assessment. At the last follow-up, the granuloma had reduced or completely disappeared in all cases, and no infections, burns, scarring or fibrosis, episodes of severe bleeding, or other serious adverse effects had been reported. All subjects tolerated the post-treatment period well. Conclusions: Our findings showed that granuloma treatment with an intralesional 1444 nm Nd:YAG laser is a minimally invasive, easy, fast, efficient, and low-risk procedure.

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“…According to a recent study, 1,064 and 1,320 nm have collagen as the primary tissue target, with adipocyte damage occurring secondarily ( 8 ). Furthermore, when compared to the other two wavelengths for laser-assisted lipolysis, 1,320 and 1,064 nm, 1,444 nm have the highest ablation efficiency with the least amount of heat localization over the depth ( 17 ). Since its introduction, numerous publications have claimed that laser-assisted lipolysis is significantly better than conventional liposuction.…”

Section: Discussionmentioning

confidence: 99%

Lipoma management with a minimally invasive 1,444 nm Nd:YAG laser technique

Piccolo¹,

Mutlag

Pieri

et al. 2022

Front. Med.

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BackgroundLipoma is the most common benign mesenchymal tumor that is composed of mature fat cells. Subdermal laser lipoma treatment may be recommended as an alternative to surgery for its removal.PurposeThe purpose of the study was to investigate the efficacy of the 1,444 nm Nd:YAG laser subcutaneous intralesional application as a treatment option for lipoma.Materials and methodsOn 60 patients (37 women and 23 men) with lipomas localized above the muscle and lipomatosis in various regions, a subcutaneous, micro-pulsed 1,444 nm Nd:YAG laser procedure was executed. Before treatment, an ultrasound was performed and the lipomas were measured. The same lighting setup and photographic tools were used to take pictures of each patient.ResultsThe lipoma reduced or completely disappeared in all cases at the last follow-up, and no infections, burns, skin lesions, episodes of severe bleeding, or other serious adverse effects were reported. The most common transient side effects were ecchymosis and edema. Partial lesion reduction refers to rare cases of lipomatosis in which the lipomas were so small that suction and accurate positioning of the capsular membrane contours were impossible.ConclusionLipoma treatment with a 1,444 nm Nd:YAG laser is a safe and effective minimally invasive procedure without risk of scarring. For cellular disruption, laser treatment is an effective and safe option.

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A Comparison of Wavelength Dependence for Laser-assisted Lipolysis Effect Using Monte Carlo Simulation

Cited by 6 publications

References 11 publications

Ablation efficiency and relative thermal confinement measurements using wavelengths 1,064, 1,320, and 1,444 nm for laser-assisted lipolysis

Ablation efficiency and relative thermal confinement measurements using wavelengths 1,064, 1,320, and 1,444 nm for laser-assisted lipolysis

Novel Management of Granuloma Formation Secondary to Dermal Filler with Intralesional 1444 nm Nd:YAG Laser Technique

Lipoma management with a minimally invasive 1,444 nm Nd:YAG laser technique

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