tomography(n = noun.act) imaging - (medicine) obtaining pictures of the interior of the body;
is a kind of pictorial representation, picturing
has particulars: x-radiation, x-raying, echography, sonography, ultrasonography, ultrasound, pet, positron emission tomography, magnetic resonance imaging, mri, radiology, radioscopy

tomography, n. a method of radiography displaying details in a selected plane within the body.

Etymology:
Gk tome a cutting + -GRAPHY

computed axial tomography, computed tomography, computerized axial tomography, computerized axial tomography scanner, computerized tomography, positron emission tomography, positron emission tomography scanner