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Neuroimaging Clin N Am. 2017 Aug;27(3):371-384. doi: 10.1016/j.nic.2017.03.002.

Dual-Energy Computed Tomography: Physical Principles, Approaches to Scanning, Usage, and Implementation: Part 1.

Author information

1
Department of Radiology, Segal Cancer Centre and Lady Davis Institute for Medical Research, Jewish General Hospital, McGill University, Room C-212.1, 3755 Cote Ste-Catherine Road, Montreal, Quebec H3T 1E2, Canada. Electronic address: rforghani@jgh.mcgill.ca.
2
GE Global Research, One Research Circle, KWC1300B, Niskayuna, NY 12309, USA.
3
Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit Street, Boston, MA 02114, USA.

Abstract

There are increasing applications of dual-energy computed tomography (CT), a type of spectral CT, in neuroradiology and head and neck imaging. In this 2-part review, the fundamental principles underlying spectral CT scanning and the major considerations in implementing this type of scanning in clinical practice are reviewed. In the first part of this 2-part review, the physical principles underlying spectral CT scanning are reviewed, followed by an overview of the different approaches for spectral CT scanning, including a discussion of the strengths and challenges encountered with each approach.

KEYWORDS:

Dual-energy CT; Dual-source CT; Fast kVp switching; Gemstone spectral imaging; Layered or sandwich detectors; Photon counting; Spectral CT or multienergy CT; Virtual monochromatic images

PMID:
28711199
DOI:
10.1016/j.nic.2017.03.002
[Indexed for MEDLINE]
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