In x rays a tomography is an examination desing to move the x ray tube in opposite directions during the exposure, to blurr the unwanted anatomical structure from the one in the plane of interest that will appear sharper.
Principles:
The x ray tube moves in one direction, while the image receptor moves in the opposite directon, the position of the fulcrum determines the object plane and only those anatomical structures lying withing this plane are imaged clear.
Equipment:
Tomographic systems are similar to conventional radiographic systems used. Nowdays the introduction of CT (computed tomography) and MRI (magnetic resonance imaging), make the convetional tomography be used less frequently.
Applications:
Conventional tomography was applied principally to improve contrast resolution. For example: to get high contras procedures such as imaging of calcified kidney stones. A disadvantange of tomography is that increased patient dose.
