Track topics on Twitter Track topics that are important to you
Nowadays, laser scalpels are commonly used in surgery, replacing the traditional surgical scalpels for several applications involving cutting or ablating living biological tissue. Laser scalpels are generally used to concentrate light energy in a very small-sized area; light energy is then converted in heat by the tissues. In other cases, the fiber glass tip of the laser scalpel is heated to high temperature and used to cut the tissues. Depending on the temperature reached in the irradiated area, different effects are visible in the tissues. In this study we report the discovery and characterization of the light emitted by soft mammalian biological tissues from seconds to hours after laser surgery application. A laser diode (with hot fiber glass tip) working at 808 nm and commercially available for medical and dentistry applications was used. The irradiated tissues (red meat, chicken breast and fat) showed light emission in the visible range, well detectable with a commercial Charge Coupled Device (CCD) camera. The time decay of the light emission, the laser power effects and the spectral features in the range 500-840 nm in the different tissues are here reported. This article is protected by copyright. All rights reserved.
This article was published in the following journal.
Name: Journal of biophotonics
Erythematotelangiectatic rosacea is a common condition in Caucasians. The most frequently used lasers to treat this condition are pulsed dye laser (PDL) and neodymium:yttrium-aluminum-garnet laser (Nd...
We present the application of a confocal fluorescence microscope to the analysis of Yb-doped solid-state laser materials, with examples of Yb-doped crystals, photonic crystal fibers and fiber preforms...
Many clinical studies have demonstrated the benefit of topical anti-inflammatory medication before and after glaucoma surgery, especially for trabeculectomy, and that they improve the long term outcom...
The meninges are involved in various pathologies and are often directly or indirectly severed during surgical procedures, especially the dura mater. This can pose a real challenge for the surgeon, as ...
The purpose of this prospective analysis was to evaluate the efficacy of erbium-substituted yttrium aluminum garnet (Er:YAG) laser compared with that of conventional surgery, regarding the long-term o...
The aim of this study was to evaluate the effect of casein phosphopeptide amorphous calcium phosphate fluoride paste (CPP-ACPF) associated with low level laser therapy (LLLT) in the sympto...
The aim of this study was to evaluate the effect of nanohydroxyapatite associated with low potency laser therapy in eliminating or reducing dentin hypersensitivity in a randomized placebo-...
The purpose of this study is to compare the 1550-nm non-ablative Fraxel laser (referred to as Fraxel Laser in this application) to the ablative 10,600-nm carbon dioxide fractional laser (r...
The greenlight laser has an absorption maximum which is exactly the same as for hemoglobin. In the presence of hemoglobin, its application causes vaporization of the tissue and this effect...
The low-power laser provides the body with an improvement in the inflammatory response. Thus, the objective of this study is to evaluate two laser application protocols in 60 patients requ...
A procedure to increase the flow of blood to the MYOCARDIUM by creating transmural channels in the heart wall via the application of laser pulses to epicardial or endocardial surfaces.
A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. This includes laser thermal angioplasty where the laser energy heats up a metal tip, and direct laser angioplasty where the laser energy directly ablates the occlusion. One form of the latter approach uses an EXCIMER LASER which creates microscopically precise cuts without thermal injury. When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty (ANGIOPLASTY, BALLOON, LASER-ASSISTED).
An imaging technique using compounds labelled with short-lived positron-emitting radionuclides (such as carbon-11, nitrogen-13, oxygen-15 and fluorine-18) to measure cell metabolism. It has been useful in study of soft tissues such as CANCER; CARDIOVASCULAR SYSTEM; and brain. SINGLE-PHOTON EMISSION-COMPUTED TOMOGRAPHY is closely related to positron emission tomography, but uses isotopes with longer half-lives and resolution is lower.
Tunable liquid lasers with organic compounds (i.e., dye) which have a strong absorption band, used as the active medium. During emission, the dye has to be optically excited by another light source (e.g., another laser or flash lamp). The range of the emission wavelength may be anywhere from the ultraviolet to the near infrared (i.e., from 180 to 1100nm). These lasers are operated in continuous wave and pulsed modes. (UMDNS, 2005)
A procedure whereby the body is stimulated to generate extra soft tissue by the application of stretching forces that stimulate new growth of tissue which, over a period of time, results in a 2-dimensional expansion of the tissue. The procedure is used in reconstructive surgery for injuries caused by trauma, burns, or ablative surgery. Various types of TISSUE EXPANSION DEVICES have been developed that exert stretching forces.
Surgery is a technology consisting of a physical intervention on tissues. All forms of surgery are considered invasive procedures; so-called "noninvasive surgery" usually refers to an excision that does not penetrate the structure being exci...
Biological therapy involves the use of living organisms, substances derived from living organisms, or laboratory-produced versions of such substances to treat disease. Some biological therapies for cancer use vaccines or bacteria to stimulate the body&rs...
Dentistry is the study, management and treatment of diseases and conditions affecting the mouth, jaw, teeth and their supporting tissues (Oxford Medical Dictionary) The work of a dentist ranges from regular patient check-up to orthodontics and surgery....