31 Aug 2007

Small animal imaging facility is big boon

When powerful magnets line up the bodys protons before radiofrequency waves can grab their attention away, its called spin physics. When signals generated by the movement are mathematically transformed into dramatic images of hearts, lungs and other organs its called a magnetic resonance image. Protons normally would be pointing in many different directions, says Dr. Tom Hu, director of the Small Animal Imaging Program at the Medical College of Georgia. But if you put an object in the MRI, the magnet will line up the protons and what that does is generate the original, steady state. Then, by applying different radio frequencies, pretty much like what you do with a car antenna, you can pursue radio frequencies to perturb the system and you pretty much listen to it........

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