Thoracic dual energy CT: acquisition protocols, current applications and future developments.
Fiche publication
Date publication
novembre 2014
Auteurs
Membres identifiés du Cancéropôle Est :
Pr ROY Catherine
Tous les auteurs :
Ohana M, Jeung MY, Labani A, El Ghannudi S, Roy C
Lien Pubmed
Résumé
Thanks to a simultaneous acquisition at high and low kilovoltage, dual energy computed tomography (DECT) can achieve material-based decomposition (iodine, water, calcium, etc.) and reconstruct images at different energy levels (40 to 140keV). Post-processing uses this potential to maximise iodine detection, which elicits demonstrated added value for chest imaging in acute and chronic embolic diseases (increases the quality of the examination and identifies perfusion defects), follow-up of aortic endografts and detection of contrast uptake in oncology. In CT angiography, these unique features are taken advantage of to reduce the iodine load by more than half. This review article aims to set out the physical basis for the technology, the acquisition and post-processing protocols used, its proven advantages in chest pathologies, and to present future developments.
Référence
Diagn Interv Imaging. 2014 Nov;95(11):1017-26