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Clinical Applications of Dual-Energy CT
Hamid Saira,Nasir Muhammad Umer,So Aaron,Andrews Gordon,Nicolaou Savvas,Qamar Sadia Raheez 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.6
Dual-energy CT (DECT) provides insights into the material properties of tissues and can differentiate between tissues with similar attenuation on conventional single-energy imaging. In the conventional CT scanner, differences in the X-ray attenuation between adjacent structures are dependent on the atomic number of the materials involved, whereas in DECT, the difference in the attenuation is dependent on both the atomic number and electron density. The basic principle of DECT is to obtain two datasets with different X-ray energy levels from the same anatomic region and material decomposition based on attenuation differences at different energy levels. In this article, we discuss the clinical applications of DECT and its potential robust improvements in performance and postprocessing capabilities.