Laser medicine consists in the use of lasers in medical diagnosis, treatments, or therapies, such as laser photodynamic therapy, photorejuvenation, and laser surgery.
The word laser stands for "light amplification by stimulated emission of radiation".
The laser was invented in 1960 by Theodore Maiman, and its potential uses in medicine were subsequently explored. Lasers benefit from three interesting characteristics: directivity (multiple directional functions), impulse (possibility of operating in very short pulses) and monochromaticity.
Several medical applications were found among this new instrument. In 1961, just one year after the laser's invention, Dr. Charles J. Campbell successfully used a ruby laser to destroy an angiomatous retinal tumor with a single pulse. In 1963, Dr. Leon Goldman reported used to the ruby laser to treat pigmented skin cells and reported on his findings.
The argon ionized laser (wavelength: 488-514nm) has since become the preferred laser for the treatment of retinal detachment. The carbon dioxide laser was developed by Kumar Patel and others in the early 1960s and is now a common and versatile tool not only for medicinal purposes but also for welding and drilling, among other uses.
The possibility of using optical fiber (over a short distance in the operating room) from the year 1970 has opened many laser applications, in particular endocavitary, thanks to the possibility to introducing the fiber into the channel of an endoscope.
During this time, the argon laser began to be used in gastroenterology and pneumology. Dr. Peter Kiefhaber was the first to "successfully perform endoscopic argon laser photocoagulation for gastrointestinal bleeding in humans". Kiefhaber is also considered a pioneer in using the Nd:YAG laser in medicine, also using it to control gastrointestinal bleeding.
In 1976, Dr. Hofstetter employed lasers for the first time in urology.Thanks to laser dye, the late 1970s saw the rise of photodynamic therapy.
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Provide understanding of the optical properties of materials, principles of laser operation and properties of generated light. Comprehension of basics of interaction between laser light and materials
This course introduces the basic principles of lasers to then focus on the latest developments in ultrafast radiation sources, including X-ray and gamma-ray sources, attosecond pulses generation, free
SummaryThe course first, overviews the necessary background topics in geometrical and wave optics, quantum mechanics. This follows by studying the fundamentals of lasers, particular types of lasers
A dye laser is a laser that uses an organic dye as the lasing medium, usually as a liquid solution. Compared to gases and most solid state lasing media, a dye can usually be used for a much wider range of wavelengths, often spanning 50 to 100 nanometers or more. The wide bandwidth makes them particularly suitable for tunable lasers and pulsed lasers. The dye rhodamine 6G, for example, can be tuned from 635 nm (orangish-red) to 560 nm (greenish-yellow), and produce pulses as short as 16 femtoseconds.
A therapy or medical treatment (Both words, "Treatment" and "Therapy" are often abbreviated tx, Tx, or Tx) is the attempted remediation of a health problem, usually following a medical diagnosis. As a rule, each therapy has indications and contraindications. There are many different types of therapy. Not all therapies are effective. Many therapies can produce unwanted adverse effects. Medical treatment and therapy are generally considered synonyms. However, in the context of mental health, the term therapy may refer specifically to psychotherapy.
Light therapy, also called phototherapy or bright light therapy is the exposure to direct sunlight or artificial light at controlled wavelengths in order to treat a variety of medical disorders, including seasonal affective disorder (SAD), circadian rhythm sleep-wake disorders, cancers, and skin wound infections. Treating skin conditions such as neurodermatitis, psoriasis, acne vulgaris, and eczema with ultraviolet light is called ultraviolet light therapy.
Explores light dosimetry in tissues for photomedicine applications, covering mechanisms of light therapy, laser classification, and the influence of laser parameters on treatment outcomes.
Ultrafast lasers pulses induced ablation of nickel-titanium (NiTi) alloy substrates immersed in deionized water yielded a high-throughput of polycrystalline core - amorphous shell NiTi nanoparticles (NPs) owing to the high pulse energy of femtosecond (fs) ...
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Free-space optics allows for design freedom and control, but miniaturization and manufacturability are limited. Here, we present a method for manufacturing complex miniaturized free-space optical systems that combines contactless femtosecond laser-activate ...