News tagged with laser light
Lymphatic fluid takes detour
When tumours metastasise, they can block lymphatic vessels, as researchers from ETH Zurich have discovered using a new method. The lymphatic fluid subsequently has to find a new path through the tissue. Such ...
Medical research
May 20, 2013 |
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Photoacoustics spares healthy lymph nodes in patients with metastasized cancer
If a tumour has spread through the lymph nodes, the decision is often taken to exercise caution and remove extra tissue, to prevent it from spreading further. This often involves the removal of healthy lymph ...
Cancer
Apr 18, 2013 |
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Laser optics plus ultrasound imaging holds promise as a noninvasive test for prostate cancer
Multispectral photoacoustic imaging, which combines laser optics and ultrasound imaging technologies, can reliably distinguish between benign and malignant prostate tissue, a new study indicates.
Cancer
Apr 18, 2013 |
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Resetting addicted brain: Laser light zaps away cocaine addiction
By stimulating one part of the brain with laser light, researchers at the National Institutes of Health (NIH) and the Ernest Gallo Clinic and Research Center at UC San Francisco (UCSF) have shown that they ...
Neuroscience
Apr 03, 2013 |
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Want to get rid of that old tattoo? You're not alone
(HealthDay)—It seems that tattoos are everywhere these days, but along with the increase in people getting inked, the number of Americans undergoing procedures to have a tattoo removed is also on the rise, ...
Health
Feb 09, 2013 |
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A light switch inside the brain
Activating and deactivating individual nerve cells in the brain is something many neuroscientists wish they could do, as it would help them to better understand how the brain works.
Neuroscience
Jan 18, 2013 |
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Helping the nose know: Researcher answers 100-year-old question about how olfactory feedback mechanism works
More than a century after it was first identified, Harvard scientists are shedding new light on a little-understood neural feedback mechanism that may play a key role in how the olfactory system works in the brain.
Neuroscience
Dec 19, 2012 |
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Study: Even the smallest stroke can damage brain tissue, impair cognitive function
Blocking a single tiny blood vessel in the brain can harm neural tissue and even alter behavior, a new study from the University of California, San Diego has shown. But these consequences can be mitigated ...
Neuroscience
Dec 16, 2012 |
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Conical fiber tips best for cutting efficacy in oral surgery
(HealthDay)—For oral surgery, conical shaped fiber tips improve the quality and efficacy of diode laser cutting, according to a study published online Nov. 5 in Lasers in Surgery and Medicine.
Surgery
Nov 09, 2012 |
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Imaging device quantifies change in port wine stains
(HealthDay)—A newly developed spatial frequency domain imaging (SFDI) device can be used to quantify biochemical compositional changes in port wine stain (PWS) lesions after laser therapy, according to ...
Surgery
Sep 10, 2012 |
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Super glue: Tests show that adhesive could improve safety of lasik eye surgery
(Medical Xpress)—Kansas State University researchers have developed a glue mixture that may reduce risks after laser vision correction surgery.
Ophthalmology
Aug 27, 2012 |
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Novel microscopy method offers sharper view of brain's neural network
Shortly after the Hubble Space Telescope went into orbit in 1990 it was discovered that the craft had blurred vision. Fortunately, Space Shuttle astronauts were able to remedy the problem a few years later ...
Neuroscience
Aug 23, 2012 |
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Researchers develop laser technology to fight cancer
Researchers at the Center for Laser Applications at the University of Tennessee Space Institute in Tullahoma have developed a technology that goes on a "seek and destroy" mission for cancerous tumors. They have harnessed ...
Cancer
Jul 23, 2012 |
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New method makes it easier to treat prostate and pancreatic cancer
Laser light in combination with certain drugs – known as photodynamic therapy – can destroy cancer tumours, but is today used mostly to cure skin cancer. The reason that internal tumours are not treated with the ...
Cancer
Feb 15, 2012 |
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Breakthrough in the development of a diagnostic test for oesophageal cancer
A team of scientists, led by the University of Liverpool, has made a major advance in the development of a diagnostic test for oesophageal cancer. The findings, achieved at STFC's ALICE accelerator facility, ...
Cancer
Feb 08, 2012 |
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Laser
A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.
For more information about Laser, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
