What type of imaging modality is CT considered to be?

Computed Tomography (CT) is considered an X-ray based imaging modality because it utilizes X-rays to create detailed cross-sectional images of the body. During a CT scan, a series of X-ray images are taken from different angles and then processed by a computer to produce cross-sectional views or slices of internal organs and tissues. This technique allows for a more comprehensive view compared to conventional X-rays, enabling enhanced visualization of complex structures and pathologies.

In contrast, nuclear medicine involves the use of radioactive materials to visualize physiological functions, ultrasound uses sound waves to create images of soft tissues, and magnetic resonance imaging employs powerful magnets and radio waves, which do not involve X-rays at all. Thus, identifying CT as an X-ray based modality accurately reflects its foundational technology and distinguishes it from other imaging techniques.