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Imaging breast cancer with light
Date:10/23/2013

WASHINGTON, Oct. 23, 2013 -- Breast cancer is one of the most common forms of cancer and cancer deaths among women worldwide. Routine screening can increase breast cancer survival by detecting the disease early and allowing doctors to address it at this critical stage. A team of researchers at the University of Twente in the Netherlands have developed a prototype of a new imaging tool that may one day help to detect breast cancer early, when it is most treatable.

If effective, the new device, called a photoacoustic mammoscope, would represent an entirely new way of imaging the breast and detecting cancer. Instead of X-rays, which are used in traditional mammography, the photoacoustic breast mammoscope uses a combination of infrared light and ultrasound to create a 3-D map of the breast. The researchers describe their device in a paper published today in The Optical Society's (OSA) open-access journal Biomedical Optics Express.

A 3-D Map of the Breast

In the new technique, infrared light is delivered in billionth-of-a-second pulses to tissue, where it is scattered and absorbed. The high absorption of blood increases the temperature of blood vessels slightly, and this causes them to undergo a slight but rapid expansion. While imperceptible to the patient, this expansion generates detectable ultrasound waves that are used to form a 3-D map of the breast vasculature. Since cancer tumors have more blood vessels than the surrounding tissue, they are distinguishable in this image.

Currently the resolution of the images is not as fine as what can be obtained with existing breast imaging techniques like X-ray mammography and MRI. In future versions, Srirang Manohar, an assistant professor at the University of Twente who led the research, Wenfeng Xia, a graduate student at the University of Twente wh
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Contact: Lyndsay Meyer
lmeyer@osa.org
202-416-1435
The Optical Society
Source:Eurekalert  

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