Researchers at fujian normal university in China and the university of British Columbia in Canada have developed a new lasaer pointer diagnosis and treatment technology that can detect microscopic lesions, allowing immediate, noninvasive surgery without affecting the surrounding tissue.
It is understood that the new technology USES the principle of multi-photon absorption photopyrolysis to close the single blood vessel at deep depth and treat different sizes of blood vessels from capillaries to venules. The technique can pinpoint and process blood vessels or nerves deep in the body’s tissues, and could be used to treat skin cancer and lesions in vital organs such as the eye and brain.
Previous techniques have used the high heat generated by lasers to close blood vessels to kill diseased tissue, but they can only deal with shallow tissue and are difficult to distinguish between different vessels. The new technology USES highly focused near-infrared lasers that can penetrate deeper and pinpoint locations.
Experiments with rat ears have shown that the technique selectively closes deep blood vessels without damaging the shallow ones that cover them. The researchers said the technique could be applied to other tissue structures and cells besides blood vessels, and could handle up to skin tissue about 400 microns deep and brain tissue about a millimeter deep.