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01-02-2021 | Computed Tomography | Review Article

Dual energy CT in clinical routine: how it works and how it adds value

Authors: Aaron D. Sodickson, Abhishek Keraliya, Bryan Czakowski, Andrew Primak, Jeremy Wortman, Jennifer W. Uyeda

Published in: Emergency Radiology | Issue 1/2021

Abstract

Dual energy computed tomography (DECT), also known as spectral CT, refers to advanced CT technology that separately acquires high and low energy X-ray data to enable material characterization applications for substances that exhibit different energy-dependent x-ray absorption behavior. DECT supports a variety of post-processing applications that add value in routine clinical CT imaging, including material selective and virtual non-contrast images using two- and three-material decomposition algorithms, virtual monoenergetic imaging, and other material characterization techniques. Following a review of acquisition and post-processing techniques, we present a case-based approach to highlight the added value of DECT in common clinical scenarios. These scenarios include improved lesion detection, improved lesion characterization, improved ease of interpretation, improved prognostication, inherently more robust imaging protocols to account for unexpected pathology or suboptimal contrast opacification, length of stay reduction, reduced utilization by avoiding unnecessary follow-up examinations, and radiation dose reduction. A brief discussion of post-processing workflow approaches, challenges, and solutions is also included.

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Title: Dual energy CT in clinical routine: how it works and how it adds value
Authors: Aaron D. Sodickson
Abhishek Keraliya
Bryan Czakowski
Andrew Primak
Jeremy Wortman
Jennifer W. Uyeda
Publication date: 01-02-2021
Publisher: Springer International Publishing
Keywords: Computed Tomography
Computed Tomography
Published in: Emergency Radiology / Issue 1/2021
Print ISSN: 1070-3004
Electronic ISSN: 1438-1435
DOI: https://doi.org/10.1007/s10140-020-01785-2

At a glance: The STEP trials

Springer Medicine

Dual energy CT in clinical routine: how it works and how it adds value

Abstract

At a glance: The STEP trials

Springer Medicine

Abstract

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