Tomography refers to the diagnostic imaging technique that uses x-rays to produce sectional images of the body. However, there are other synonymous terms for tomography depending on the application, technology, or method used. For instance, computed tomography (CT) is a type of tomography that uses computer algorithms to produce detailed images of the body. Magnetic resonance imaging (MRI) is another type of tomography that utilizes powerful magnetic fields and radio waves to create detailed images of the body. Other synonyms for tomography include positron emission tomography (PET), single-photon emission computed tomography (SPECT), and optical coherence tomography (OCT). All these tomography techniques are used in medicine to diagnose and monitor various health conditions.