Contrast enhancement with dual energy CT for the assessment of atherosclerosis

Stefan C. Saur, and Hatem Alkadhi, and Luca Regazzoni, and Simon Eugster, and Gabor Szekely, and Philippe Cattin, . (2009) Contrast enhancement with dual energy CT for the assessment of atherosclerosis. In: Bildverarbeitung für die Medizin 2009 : Algorithmen - Systeme - Anwendungen ; Proceedings des Workshops vom 22. bis 25. März 2009 in Heidelberg. Berlin, pp. 61-65.

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Official URL: http://edoc.unibas.ch/dok/A6308299

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A drawback of the commonly used single source computed tomography systems (CT) is that different materials might show very similar attenuation at any selected radiation energy. However, the assessment of atherosclerosis requires good differentiation between vessel lumen, calcium, adipose, and surrounding tissue. Dual energy CT (DECT) simultaneously measures attenuations at two energies and therefore can improve the differentiation to some extent. A tissue cancelation and enhancement algorithm for dual energy data was already proposed in 1981 and evaluated on experimental settings with a stationary X-ray source. For this study, we adapted this algorithm for DECT and propose its usage as a pre-processing step for the assessment of atherosclerosis. On clinical DECT patient data and with fixed parameters we could show a simultaneous contrast enhancement between 8% and 67% among all targeted tissues.
Faculties and Departments:03 Faculty of Medicine > Departement Biomedical Engineering > Imaging and Computational Modelling > Center for medical Image Analysis & Navigation (Cattin)
UniBasel Contributors:Cattin, Philippe Claude
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Note:Publication type according to Uni Basel Research Database: Conference paper
Last Modified:03 Jul 2015 08:53
Deposited On:03 Jul 2015 08:53

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