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Dual energy computed tomography for the head.

Authors
  • Naruto, Norihito1
  • Itoh, Toshihide2
  • Noguchi, Kyo3
  • 1 Department of Radiology, Graduate School of Medicine and Pharmaceutical Science, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan. , (Japan)
  • 2 Department of Research and Collaboration, Siemens Healthcare, Tokyo, Japan. , (Japan)
  • 3 Department of Radiology, Graduate School of Medicine and Pharmaceutical Science, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan. [email protected] , (Japan)
Type
Published Article
Journal
Japanese journal of radiology
Publication Date
Feb 01, 2018
Volume
36
Issue
2
Pages
69–80
Identifiers
DOI: 10.1007/s11604-017-0701-4
PMID: 29119457
Source
Medline
Keywords
License
Unknown

Abstract

Dual energy CT (DECT) is a promising technology that provides better diagnostic accuracy in several brain diseases. DECT can generate various types of CT images from a single acquisition data set at high kV and low kV based on material decomposition algorithms. The two-material decomposition algorithm can separate bone/calcification from iodine accurately. The three-material decomposition algorithm can generate a virtual non-contrast image, which helps to identify conditions such as brain hemorrhage. A virtual monochromatic image has the potential to eliminate metal artifacts by reducing beam-hardening effects. DECT also enables exploration of advanced imaging to make diagnosis easier. One such novel application of DECT is the X-Map, which helps to visualize ischemic stroke in the brain without using iodine contrast medium.

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