NIR Irradiation Based on Low‐Power LED Drive Module Design for Fat Reduction

Yoon, Ki‐Cheol; Kim, Kwang Gi

doi:10.1155/2021/9992095

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…1 (b), loss (58 % @ WD of 20 cm) occurs as described in Equation (1), decreasing the power (Po) of the LED, as shown in Fig. 1 (c ) [24,25]. Therefore, the maximum power analyzed by the target is approximately 8.0 pW, as described in Equation (3), and fluorescence expression becomes impossible because of low emission power.…”

Section: Examining the Limit Of Fluorescencementioning

confidence: 97%

Diamond shaped quasi-symmetrical single LED with high and wide beam intensity for surgical fluorescence microscope applications

Kim¹,

Ju²,

Yoon³

et al. 2023

Preprint

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In the malignant tumor removal process, fluorescence emission is induced by irradiation with a fluorescent contrast agent and light source to observe the condition of the tumor being removed. Light-emitting diodes (LEDs), which are used in surgical methods to remove tumors through fluorescence emission, have low beam width and power to irradiate lesions. This paper proposes a method for increasing the beam width and power of light (LED). LED light was irradiated with a beam mirror and collected at the target point through a diamond shape. The power of the converged beam was 0.60 mW. Therefore, the power of the light was increased by 4.0 times compared with the conventional method. The proposed method is expected to be mass-produced as a micromodule with semiconductor processing and is considered useful for accurate monitoring when observing the blood flow status of tumors or blood vessels using a fluorescent contrast agent at the surgical site.

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Section: Examining the Limit Of Fluorescencementioning

confidence: 97%

Diamond shaped quasi-symmetrical single LED with high and wide beam intensity for surgical fluorescence microscope applications

Kim¹,

Ju²,

Yoon³

et al. 2023

Preprint

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Clinical Protocol Effects With LED Photobiomodulation for Reducing Adipose Tissue in the Abdomen Region

Nishioka,

Brassolatti,

Alves

et al. 2024

J of Cosmetic Dermatology

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BackgroundReverse the fat accumulation and to improve body contouring with more safely than invasive procedures has become a necessary therapeutic approach, but little detailed when using LED photobiomodulation.AimsTo evaluate an application protocol with two different wavelengths (red and infrared LED) consecutively in the abdomen region alone or associated with the dermocosmetics application with lipolytic properties.MethodsNinety patients with a significant amount of adipose tissue in the abdomen region were selected and randomized into three groups: Sham (SG), in which patients received a simulation of the treatment; LED (LG), in which participants received the application with LED; LED with dermocosmetic (LDG), in which the participants underwent a combination of LED and dermocosmetic treatment. The following assessments were carried out: anthropometric data (weight, height, perimetry, and adipometry); ultrasound examination to adipose layer; patient satisfaction questionnaire; histology of a donated a tissue sample.ResultsThe main findings were a decrease in umbilical perimetry, a significant decrease in the body fat layer determined by ultrasound and significant histological changes that indicated an improvement in the appearance of the skin and an increase in the amount of macrophages in the subcutaneous layer. Histological data also showed an improvement in the appearance of the skin with an increase in collagen deposition and an increase in macrophages in the subcutaneous layer.ConclusionsThe LED phototherapy application protocol, both alone and in association with the dermocosmetic, with the emission of two consecutive wavelengths, was effective in reducing the fat tissue in the abdomen region.

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Optical Methods for Optimizing Fluorescence Imaging Field of View and Image Quality in Surgical Guidance Procedures

Seo,

Park,

Yoon

et al. 2024

Diagnostics

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Cancer surgery is aimed at complete tumor resection and accurate lymph node detection. However, numerous blood vessels are distributed within the tumor, and the colors of the tumor, blood vessels, and lymph nodes are similar, making observations with the naked eye difficult. Therefore, tumors, blood vessels, and lymph nodes can be monitored via color classification using an operating microscope to induce fluorescence emission. However, as the beam width of the LED required to induce fluorescence emission is narrow and the power loss of the beam is significant at a certain working distance, there are limitations to inducing fluorescence emission, and light reflection occurs in the observation image, obstructing the view of the observation area. Therefore, the removal of reflected light is essential to avoid missing the diagnosis of the lesion under observation. This paper proposes the use of a beam mirror and polarizing filter to increase the beam width and beam intensity. The refraction and reflection effects of the beam were utilized using the beam mirror, and the rotation angle of the polarizing filter was adjusted to remove light reflection. Consequently, the minimum beam power using the beam mirror was 10.9 mW, the beam width was doubled to 40.2°, and more than 98% of light reflection was removed at 90° and 270°. With light reflection effectively eliminated, clear observation of lesions is possible. This method is expected to be used effectively in surgical, procedural, and diagnostic departments.

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NIR Irradiation Based on Low‐Power LED Drive Module Design for Fat Reduction

Cited by 5 publications

References 12 publications

Diamond shaped quasi-symmetrical single LED with high and wide beam intensity for surgical fluorescence microscope applications

Diamond shaped quasi-symmetrical single LED with high and wide beam intensity for surgical fluorescence microscope applications

Clinical Protocol Effects With LED Photobiomodulation for Reducing Adipose Tissue in the Abdomen Region

Optical Methods for Optimizing Fluorescence Imaging Field of View and Image Quality in Surgical Guidance Procedures

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