Abstract
The use of advanced imaging in form of computed tomography (CT) scans and magnetic resonance imaging (MRI) has become a regular diagnostic in medical institutions. CT in particular has ameliorated both image quality and scanner efficiency, leading to CT replacing plain films and conventional catheter angiography. It is also useful when imaging complex bone fractures, severely eroded joints, or bone tumors since it usually produces more comprehensive images than would be possible with a conventional x-ray. However, CT scans use x-rays, and all x-rays produce ionizing radiation. Ionizing radiation has the potential to cause biologic effects in living tissue. This is a risk that increases with the number of exposures added up over the life of an individual. However, the likelihood of developing cancer from radiation exposure is generally inconsequential. In this chapter we discuss the CT functioning, applications, and advancements in the dental and medical fields.
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