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La radiologia medica
Published in: La radiologia medica 12/2019

01-12-2019 | Computed Tomography | COMPUTED TOMOGRAPHY

Dual-energy CT: theoretical principles and clinical applications

Authors: Andrea Agostini, Alessandra Borgheresi, Alberto Mari, Chiara Floridi, Federico Bruno, Marina Carotti, Nicolò Schicchi, Antonio Barile, Stefania Maggi, Andrea Giovagnoni

Published in: La radiologia medica | Issue 12/2019

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Abstract

The physical principles of dual-energy computed tomography (DECT) are as old as computed tomography (CT) itself. To understand the strengths and the limits of this technology, a brief overview of theoretical basis of DECT will be provided. Specific attention will be focused on the interaction of X-rays with matter, on the principles of attenuation of X-rays in CT toward the intrinsic limits of conventional CT, on the material decomposition algorithms (two- and three-basis-material decomposition algorithms) and on effective Rho-Z methods. The progresses in material decomposition algorithms, in computational power of computers and in CT hardware, lead to the development of different technological solutions for DECT in clinical practice. The clinical applications of DECT are briefly reviewed in relation to the specific algorithms.
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Metadata
Title
Dual-energy CT: theoretical principles and clinical applications
Authors
Andrea Agostini
Alessandra Borgheresi
Alberto Mari
Chiara Floridi
Federico Bruno
Marina Carotti
Nicolò Schicchi
Antonio Barile
Stefania Maggi
Andrea Giovagnoni
Publication date
01-12-2019
Publisher
Springer Milan
Published in
La radiologia medica / Issue 12/2019
Print ISSN: 0033-8362
Electronic ISSN: 1826-6983
DOI
https://doi.org/10.1007/s11547-019-01107-8

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