Biomedical imaging: Ultrasound guide star and time-reversal mirror can focus light deep under the skin
Friday, February 11, 2011 - 13:31
in Physics & Chemistry
Focusing light into a scattering medium such as tissue has been a dream since the beginning of biomedical optics. Previous techniques allowed light to be focused only within a millimeter of the skin. Now a scientist has invented a technique called TRUE that uses an ultrasound guide star to allow scattered optical light be focused deep within tissue.