Image Evaluation of Free-breathing Navigator Echo and Triggered Cardiac-gated Delayed Myocardial Enhancement Magnetic Resonance Imaging in Sedated Infants
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Abstract
We validated a navigator-echo-triggered sequence that drives magnetization before cardiac-gated inversion recovery T1 turbo field echo acquisition, in the sedated free-breathing pediatric population. Cardiac magnetic resonance imaging was performed on sedated infants with single ventricle. We calculated the signal-to-noise ratios and contrast-to-noise ratios of 2 groups of images obtained using respiratory triggering with and without navigator echo. All images were then visually assessed by 2 observers. The signal-to-noise ratio and the contrast-to-noise ratio were significantly higher with than without navigator echo (p<0.01; p<0.05). The visual assessment scores were also consistently better with than without navigator echo (p<0.01). Free-breathing navigator echo was found to have the advantage of decreasing the motion artifact caused by respiration. Cardiacgated inversion recovery T1 turbo field echo sequence for free-breathing navigator-echo-triggered respiration allows for the acquisition, in sedated infants, of diagnostic images whose quality exceeds that of the non-navigator-echo-triggered alternative.
Journal
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- Acta Medica Okayama
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Acta Medica Okayama 72 (3), 267-273, 2018-06
Okayama University Medical School
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Details 詳細情報について
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- CRID
- 1390572174774510208
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- NII Article ID
- 120006482821
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- NII Book ID
- AA00508441
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- ISSN
- 0386300X
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- PubMed
- 29926004
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- PubMed
- CiNii Articles
- KAKEN