CT or MRI?

February 1997 / Inbox / CT or MRI?

I enjoyed "How Microchips Shook the World" (December 1996). However, the picture you included with the text box "Computed Tomography for Everyone" on page 70 does not show a CT scanner, but an MRI (magnetic resonance imaging) scanner. While you could perhaps say that, in the broadest sense, MRI is actually CT because it uses computers to construct tomographic (i.e., slice) images of the body, CT normally refers to the modality that uses X rays to make these images. The points that the text box listed in regard to CT are also valid for MRI, however.
Alan A. Hobson, R.T.
ahobson@indy.net

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