Abstract
The assessment of myocardial perfusion using single-energy (SE) imaging is influenced
by beam-hardening artifacts (BHA). We sought to explore the ability of dual-energy
(DE) imaging to attenuate the presence of BHA. Myocardial signal density (SD) was
evaluated in 2240 myocardial segments (112 for each energy level) and in 320 American
Heart Association segments among the SE group. Compared to DE reconstructions at the
best energy level, SE acquisitions showed no significant differences overall regarding
myocardial SD or signal-to-noise ratio. The segments most commonly affected by BHA
showed significantly lower myocardial SD at the lowest energy levels, progressively
normalizing at higher energy levels.
Abbreviations:
SE (single energy), DE (dual energy), CTP (computed tomography perfusion), SD (signal density), BHA (beam-hardening artifacts), CCTA (coronary computed tomography angiography), CAD (coronary artery disease)Keywords
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Article info
Publication history
Published online: April 18, 2015
Accepted:
April 8,
2015
Received in revised form:
March 30,
2015
Received:
February 19,
2015
Footnotes
☆We declare that Drs. Patricia Carrascosa and Ricardo C. Cury provided consultant work for GE Healthcare in the past 12 months. There are no competing interests related to the manuscript for any of the other authors.
Identification
Copyright
© 2015 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
