HERNDON, Va.--(BUSINESS WIRE)--Guardian Technologies International (OTCBB: GDTI), innovators of groundbreaking medical imaging and threat detection technology with critical and immediate applications for the healthcare and homeland security markets, announced today that the Medical Imaging and Informatics Laboratory at the University of California (USC) has extended its collaboration agreement with the Company to further validate the real world application of Signature Mapping™ and to develop a prototype that will serve as a model for future use by radiologists.
