Or tom- before a vowel. A combining form meaning a cut, section, or layer, as might be achieved by cutting or slicing. Used in the formation of compound words such tomography. From the Greek tomos (a cutting).
A radiograph (x-ray) of a selected layer of the body made by tomography. A tomogram is a two-dimensional image representing a slice or section through a three-dimensional object. The term tomogram may be made more specific, as in nephrotomogram (tomogram of the kidney).
The apparatus for generating a tomogram, a two-dimensional image of a slice or section through a three-dimensional object. The tomograph achieves this remarkable feat by simply moving an x-ray source in one direction as the x-ray film is moved in the opposite direction during the exposure to sharpen structures in the focal plane, while structures […]
Computed tomography (CT); Computed tomography colography; Computerized axial tomography scan (CAT scan); Electron beam computerized tomography (EBCT); Positron emission tomography (PET scan).
- Tomography, computerized axial
Pictures of structures within the body created by a computer that takes the data from multiple X-ray images and turns them in pictures. The CAT (computerized axial tomography) scan can reveal some soft-tissue and other structures that cannot be seen in conventional X-rays. Using the same dosage of radiation as that of an ordinary X-ray […]
- Tone deafness
The inability to recognize musical tones or reproduce them. Also called amusia.