2006-06-06 17:11:28 · 3 answers · asked by Nemesis 7 in Science & Mathematics ➔ Physics
I highly recommend this site (formerly called fMRI for dummies, lol!)
http://psychology.uwo.ca/culhamlab/Jody_web/fmri4newbies.htm
It's a really really good site, with tonnes of illustrated diagrams and information on all asects of fmri (and mri). Here's a direct link to a pdf file of the basis of fmri and mri
http://psychology.uwo.ca/culhamlab/Jody_web/fMRI4Dummies/pdfs_and_ppt/Basic_MR_Physics_grey.pdf
Hope that helps!
2006-06-06 18:48:42 · answer #1 · answered by Isabel 4 · 0⤊ 0⤋
The machine consists of a huge solenoid, which is made of superconducting wires to facilitate the use of a large magnetic field. In the presence of this magnetic field, hydrogen nuclei are made to behave like tiny radio transmitter to transmit radiowaves. Computers then process these waves into images, known as magnetic resonance images.
2006-06-06 17:24:34 · answer #2 · answered by H 2 · 0⤊ 0⤋
Answer simplified. A giant, powerful magnet vibrates hydrogen molecules. The molecules give off radio waves. Which is then turned into a picture.
2006-06-06 17:31:32 · answer #3 · answered by Jat M 3 · 0⤊ 0⤋