RSS-Feed abonnieren
DOI: 10.1055/s-0042-1742772
Principles and Available Hardware in DECT
Abstract
Computed tomography (CT) has undergone a phenomenal evolution since its introduction in 1971 and has revolutionized diagnostic radiology. It is now the cornerstone of diagnostic imaging and has become an inevitable part of the management of patients. Among all the advancements and breakthroughs witnessed over the years, the most recent and most advanced is the dual-energy CT (DECT), also known as spectral CT, introduced in 2006. In DECT, two datasets are obtained by scanning with two different energy spectra (low and high energy). The difference in attenuation can differentiate materials with different elemental compositions but similar attenuation in single-energy CT. Therefore, it has widespread clinical applications based on its potential for material decomposition and virtual monoenergetic imaging. In this review, the principle and hardware of DECT will be presented with an overview of its clinical applications.
Publikationsverlauf
Artikel online veröffentlicht:
18. Februar 2022
© 2022. Indian Society of Gastrointestinal and Abdominal Radiology. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)
Thieme Medical and Scientific Publishers Pvt. Ltd.
A-12, 2nd Floor, Sector 2, Noida-201301 UP, India
-
References
- 1 Kohl G. The evolution and state-of-the-art principles of multislice computed tomography. Proc Am Thorac Soc 2005; 2 (06) 470-476 , 499–500
- 2 McCollough CH, Leng S, Yu L, Fletcher JG. Dual- and multi-energy CT: principles, technical approaches, and clinical applications. Radiology 2015; 276 (03) 637-653
- 3 Alvarez RE, Macovski A. Energy-selective reconstructions in X-ray computerized tomography. Phys Med Biol 1976; 21 (05) 733-744
- 4 Macovski A, Alvarez RE, Chan JL-H, Stonestrom JP, Zatz LM. Energy dependent reconstruction in X-ray computerized tomography. Comput Biol Med 1976; 6 (04) 325-336
- 5 Forghani R, De Man B, Gupta R. Dual-energy computed tomography: physical principles, approaches to scanning, usage, and implementation: part 1. Neuroimaging Clin N Am 2017; 27 (03) 371-384
- 6 Johnson TR. Dual-energy CT: general principles. AJR Am J Roentgenol 2012; 199 (5 Suppl) S3-S8
- 7 McCollough CH, Boedeker K, Cody D. et al. Principles and applications of multienergy CT: report of AAPM task group 291. Med Phys 2020; 47 (07) e881-e912
- 8 Agostini A, Borgheresi A, Mari A. et al. Dual-energy CT: theoretical principles and clinical applications. Radiol Med (Torino) 2019; 124 (12) 1281-1295
- 9 So A, Nicolaou S. Spectral computed tomography: fundamental principles and recent developments. Korean J Radiol 2021; 22 (01) 86-96
- 10 Yu L, Leng S, McCollough CH. Dual-energy CT-based monochromatic imaging. AJR Am J Roentgenol 2012; 199 (5, Suppl): S9-S15