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 |
|---|---|
| Pages (from-to) | 267-273 |
| Number of pages | 7 |
| Journal | Acta Medica Okayama |
| Volume | 72 |
| Issue number | 3 |
| Publication status | Published - Jan 1 2018 |
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Keywords
- Cardiac
- Infant
- Inversion recovery T1 turbo field echo
- Magnetic resonance imaging
- Navigator echo
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
Cite this
Image evaluation of free-breathing navigator echo and triggered cardiac-gated delayed myocardial enhancement magnetic resonance imaging in sedated infants. / Matsuura, Ryutaro; Goto, Sachiko; Sato, Shuhei; Akagi, Noriaki; Tahara, Seiji.
In: Acta Medica Okayama, Vol. 72, No. 3, 01.01.2018, p. 267-273.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Image evaluation of free-breathing navigator echo and triggered cardiac-gated delayed myocardial enhancement magnetic resonance imaging in sedated infants
AU - Matsuura, Ryutaro
AU - Goto, Sachiko
AU - Sato, Shuhei
AU - Akagi, Noriaki
AU - Tahara, Seiji
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
KW - Cardiac
KW - Infant
KW - Inversion recovery T1 turbo field echo
KW - Magnetic resonance imaging
KW - Navigator echo
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M3 - Article
C2 - 29926004
AN - SCOPUS:85048882547
VL - 72
SP - 267
EP - 273
JO - Acta Medica Okayama
JF - Acta Medica Okayama
SN - 0386-300X
IS - 3
ER -