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.
Original language | English |
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Pages (from-to) | 267-273 |
Number of pages | 7 |
Journal | Acta medica Okayama |
Volume | 72 |
Issue number | 3 |
Publication status | Published - 2018 |
Keywords
- Cardiac
- Infant
- Inversion recovery T1 turbo field echo
- Magnetic resonance imaging
- Navigator echo
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)