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Purdue researchers develop technology to detect cancer by scanning surface veins
Date:9/4/2007

provides the best signal to background ratio. The technology is able to scan every cell that is pumped through the vessel, He said.

Low's team has developed two labeling agents that attach to different forms of cancer. One label targets ovarian, non-small lung, kidney and endometrial cancer, and the other targets prostate cancer.

These labels would be administered through an injection. The first label has already been tested in humans and has no adverse side effects and could potentially be administered weekly, He said.

Computed tomography, or CT, scans and magnetic resonance imaging, or MRI, are the current methods used to track the spread of cancer. These methods have a limited resolution, and a 1 millimeter tumor could go undetected by CT or MRI. The Purdue-developed technology can achieve single-cell resolution and can detect rare cell populations.

"Our method can detect cancer cells early in disease development and the test can be conducted frequently," Low said. "Discovering the cancer early and knowing whether it has metastasized, or spread, greatly improves a patient's chance for successful treatment."

The laser penetrates to a depth of 100 microns and is able to examine shallow blood vessels near the surface of the skin. Advanced optical technology could be incorporated into the technology platform and enable the method to reach deeper vessels that handle larger volumes of blood, Cheng said.

The Purdue team continues to work with the Mayo Clinic and is planning to initiate a clinical trial to further evaluate the technique. The team also plans to develop labels for additional types of cancer and to downsize the equipment to make the technology portable.


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Contact: Phillip Low
plow@purdue.edu
765-494-5273
Purdue University
Source:Eurekalert

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