Why do we call for them CT scan now and not CAT scan?

It's a question for my neurobiology lab but I can't find a good answer....
Answers:
I believe it pertains to the middle word - Axial. Now, the machines are more sophisticated and deal beside more than just the axial plane.

http://en.wikipedia.org/wiki/Computed_to…

"Although historically the images generated be in the axial or transverse plane, orthogonal to the long axis of the body, modern scanners allow this volume of data to be reformatted in mixed planes or even as volumetric (3D) representations of structures."
peta complained and accused the medicine world of scanning cats

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