Ct and X-radiation

Ct noun - A method of examining body organs by scanning them with X rays and using a computer to construct a series of cross-sectional scans along a single axis.

X-radiation and ct are semantically related. In some cases you can use "X-radiation" instead a noun "Ct".

X-radiation noun - Electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target.

Ct and x-radiation are semantically related. Sometimes you can replace term "Ct" with "X-radiation", this terms are similar.