Duke University Medical Center researchers have created for the first time moving images of blood traveling through vessels, non-invasively and without the use of contrast agents or radiation. They used a novel application of magnetic resonance imaging (MRI) technology.
Robert Judd, Ph.D.
PHOTO CREDIT: Duke University Medical Center
Just as importantly, the researchers said, this technology can easily be applied to existing MRI machines, since the advances reported by the Duke team do not involve new hardware, but are rather the result of new conceptualization of the technology.
MRI uses harmless magnetic fields and radio-frequency signals to image tissues in the body. Basically, the magnetic fields cause hydrogen nuclei, or protons, that are part of water molecules in tissue to align. Pulses of radio frequency waves perturb this alignment, and the molecules give off telltale signals as they lose energy. The signature of such water molecules differs according to the tissue, providing the contrast that is a key to MRIs ability to sensitively image tissues.
Richard Merritt | dukemed news
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