Dual-energy computed tomography.
Dual-energy computed tomography (DECT) yields precise anatomic and functional images by exploiting differences in the interactions of high- and low-energy photon spectra with different tissues' and materials' atomic components to more precisely differentiate the chemistry of tissues and disease processes than is possible with traditional single-energy CT scan acquisitions. This article introduces the history of DECT, its physical basis, scanner designs, radiation dose considerations, and postprocessing techniques. DECT's clinical applications also are described, and this relatively new imaging modality's clinical limitations and future prospects are discussed.
Bryant
B
Furlow
D016477:Artifacts; D057791:Cardiac Imaging Techniques; D003106:Colon / Q000000981:diagnostic imaging; D006073:Gout / Q000000981:diagnostic imaging; D006801:Humans; D007091:Image Processing, Computer-Assisted; D007669:Kidney Calculi / Q000000981:diagnostic imaging; D008099:Liver / Q000000981:diagnostic imaging; D009369:Neoplasms / Q000000981:diagnostic imaging; D009984:Orthopedic Fixation Devices; D011829:Radiation Dosage; D015900:Radiography, Dual-Energy Scanned Projection; D013902:Radiography, Thoracic / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods*