Laser Surgery Current Events | Laser Surgery News | 6
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Laser therapy can aggravate skin cancer
High irradiances of low-level laser therapy (LLLT) should not be used over melanomas. view more (2009-11-20)
Smoking can harm the long-term effects of some oral surgery procedures
A study in the September issue of the Journal of Periodontology (JOP) found that smokers had less desirable long term results following periodontal plastic surgery than non-smokers. view more (2007-09-19)
Long waiting lists do not reflect a general failure of the NHS
Despite widespread political and media attention about long waiting lists, a study in this week's BMJ finds that in most instances, substantial numbers of patients waiting longer than six months for elective surgery are restricted to a small number of hospitals. Researchers at the University of Bristol examined the distribution of patients waiting... view more... (2003-01-22)
New unifying theory of lasers advanced by physicists
Researchers at Yale and the Institute of Quantum Electronics at ETH Zurich have formulated a theory that, allows scientists to better understand and predict the properties of both conventional and non-conventional lasers, according to a recent article in Science. view more (2008-05-28)
Blue laser - the alpha and the omega
The future of DVD is blue. New, low-cost optical laser technology generates short-wavelength beams. At the other end of the beam are detector heads that will soon contain arrays of up to 25 sensors. Two Fraunhofer Institutes are taking the lead at both ends of the spectrum. Man's appetite seems to be insatiable. In the dark ages, packing away... view more... (2004-05-14)
Researchers at UC-Santa Barbara have built the world's first mode-locked silicon evanescent laser
Researchers at UC Santa Barbara have announced they have built the world's first mode-locked silicon evanescent laser, a significant step toward combining lasers and other key optical components with the existing electronic capabilities in silicon. view more (2007-08-22)
No Evidence That Obese People Are At Higher Risk Of Complications After Surgery (pp 2001, 2032)
Results of a prospective study in this week's issue of THE LANCET suggest that excluding obese people from surgery because of fears about postoperative complications is unjustified. Despite a lack of convincing evidence, obese people are thought to be at a higher risk of complications after surgery than those who are not obese. Pierre-Alain... view more... (2003-06-11)
PREOPERATIVE RADIOTHERAPY IMPROVES OUTCOME IN RECTAL CANCER (PP 1285, 1291)
Preoperative radiotherapy reduces risk of local recurrence and death from rectal cancer, conclude authors of a systematic overview published in this week's issue of The Lancet. There are different opinions about when it is best to give radiotherapy for rectal cancer. In Scandinavia, the Netherlands, and some other European countries, radiotherapy... view more... (2001-10-17)
New Laser-Based Imaging for Early Diagnosis of Rheumatoid Arthritis
Study Documents Imaging Technique’s Accuracy in Detecting the Course of Finger Joint Inflammation view more (2002-04-24)
Scientists demonstrate laser with controlled polarization
Applied scientists at the Harvard School of Engineering and Applied Sciences (SEAS) in collaboration with researchers from Hamamatsu Photonics in Hamamatsu City, Japan, have demonstrated, for the first time, lasers in which the direction of oscillation of the emitted radiation, known as polarization, can be designed and controlled at will. view more (2009-04-13)
A first experiment with the new "free-electron laser"
An international group of scientists has published first experiments carried out using the new soft X-ray free-electron laser (FEL) at the research center DESY (Nature, vol 420, p 482-485 and p 467). Using small clusters of noble gas atoms, for the first time, researchers studied the interaction of matter with intense X-ray radiation from an FEL... view more... (2002-12-05)
Sewer sensors examine the parts the inspectors cannot reach
A remote control sensing device is being developed to detect defects in sewer walls. Using both ultrasound and laser light, digital information on the condition of the sewer walls is fed back to a computer which can be programmed to spot problems. The research is being carried out by a team in the Department of Mechanical Engineering at King's... view more... (2002-10-10)
PTB Terahertz calibration satisfies US laser manufacturer
Terahertz radiation still lies in a metrological no man's land - a metrology gap. The Physikalisch-Technische Bundesanstalt (PTB) can now close this gap. view more (2009-11-06)
Surgery best option for preventing recurrence of venous leg ulcers (p 1854)
A UK study in this week's issue of THE LANCET highlights how surgery in addition to compression treatment could substantially reduce the risk of recurrent leg ulcers. Venous leg ulceration affects 1-2% of people and accounts for 1% of health costs in developed countries. Treatment includes compression, leg raising, and exercise; no randomised... view more... (2004-06-02)
High Power Laser for Ultraviolet Light
An international team of scientists at the research center DESY recently succeeded in obtaining the maximum light amplification from a "free electron laser" (FEL) for ultraviolet radiation. The electron laser produced an amplification of 10 million - this corresponds to the theoretically expected peak performance for such a device and presents a... view more... (2001-09-19)
Cost of waiting for gall bladder surgery is high
A significant amount of NHS money is being used to treat patients with recurrent gallstone problems while they await surgery, warn researchers in Postgraduate Medical Journal. view more (2002-12-13)
Laser Instead Of A Diamond Saw
St. Petersburg physicists have developed a plant that allows to cut sapphire crystals into almost ideally smooth plates being fractions of millimeter thick. The approach suggested by the researchers fundamentally differs from the traditional one. They suggest that sapphire should not be sawn by a saw, but split by laser. view more (2004-10-22)
Laser sets records in power and energy efficiency
The rise in global terrorism in recent years has brought significant attention to the needs for more advanced sensors and defense technologies to protect civilians and soldiers. view more (2007-07-24)
Electron self-injection into an evolving plasma bubble
Particle accelerators are among the largest and most expensive scientific instruments. Thirty years ago, theorists John Dawson and Toshiki Tajima proposed an idea for making them thousands of times smaller: surf the particles on plasma waves driven by short intense laser pulses. view more (2009-11-03)
Patent application for first ever coloured-light laser
Physicists at the University of Bonn have applied to patent a laser capable of producing almost every colour, from infrared through the entire visible spectrum to the UV range - and this is done not with high-cost optical crystals, but with the aid of a simple glass fibre. The new laser could bring huge benefits, especially in the field of medical... view more... (2003-08-21)
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