Computed tomography (CT) is a medical imaging technique employing tomography. Digital geometry processing is used to produce a three-dimensional image of the inside of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The statement "tomography" is derived from the Greek tomos (slice) and graphein (to write).
Computed tomography was initially known as the "EMI scan" as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was presently known as computed axial tomography (CAT or CT scan) and body section roentgenography.
CT generate a volume of data which can be manipulated, through a process known as windowing, in order to demonstrate various structures based on their ability to block the X-ray beam. Even though historically the images generated were in the axial or transverse plane (orthogonal to the long axis of the body), modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures.
Computed tomography was initially known as the "EMI scan" as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was presently known as computed axial tomography (CAT or CT scan) and body section roentgenography.
CT generate a volume of data which can be manipulated, through a process known as windowing, in order to demonstrate various structures based on their ability to block the X-ray beam. Even though historically the images generated were in the axial or transverse plane (orthogonal to the long axis of the body), modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures.
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