[Volumetric computed tomography: Principles, parameters].
CT has become the chest imaging technique of reference after chest radiograph performed on the frontline. Technological developments have resulted in shortening the duration of image acquisition to a few seconds, and allow imaging the entire chest in patients unable to take a long breath. This fact-sheet aims to present the basic principles of formation of the CT image, the various embodiments of this imaging technique, and its main pitfalls and constraints.
Jankowski
A
A
Pôle d'imagerie, clinique universitaire de radiologie et imagerie médicale, CHU de Grenoble, BP 217, 38043 Grenoble cedex 09, France. AJankowski@chu-grenoble.fr
Ferretti
G
G
D016477:Artifacts; D003287:Contrast Media / Q000008:administration & dosage; D004867:Equipment Design; D045853:Exhalation; D006112:Gravitation; D006801:Humans; D011187:Posture; D013902:Radiography, Thoracic / Q000295:instrumentation / Q000379:methods*; D036542:Tomography, Spiral Computed / Q000295:instrumentation / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods*
D003287:Contrast Media