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Multidelay Arterial Spin-Labeling MRI in Neonates and Infants: Cerebral Perfusion Changes during Brain Maturation

Authors
Kim, HG; Lee, JH; Choi, JW; Han, M; Gho, SM; Moon, Y
Citation
AJNR. American journal of neuroradiology, 39(10):1912-1918, 2018
Journal Title
AJNR. American journal of neuroradiology
ISSN
0195-61081936-959X
Abstract
BACKGROUND AND PURPOSE: Arterial spin-labeling with multiple postlabeling delays can correct transit times. We tried to evaluate CBF in neonates and infants using multidelay arterial spin-labeling.
MATERIALS AND METHODS: Multidelay arterial spin-labeling was applied to 13 preterm neonates (mean postmenstrual age, 34.9 weeks), 13 term-equivalent-age neonates (mean postmenstrual age, 39.2 weeks), and 6 infants (mean postmenstrual age, 57.8 weeks). Transit time-corrected CBF in the caudate, thalamus, frontal GM, occipital GM, frontal WM, and occipital WM was measured, and relative CBF compared with the whole-brain CBF was calculated. Inter- and intragroup comparisons were performed among the 3 age groups. A correlation and nonlinear regression analysis were performed between postmenstrual age and CBF.
RESULTS: Intergroup comparisons showed significantly higher whole-brain CBF in infants (38.3 mL/100 g/min) compared with preterm (15.5 mL/100 g/min) and term-equivalent-age (18.3 mL/100 g/min) neonates (P < .001). In the intragroup comparison, all 3 groups showed significantly higher relative CBF values in the occipital WM (63.6%-90.3%) compared with the frontal WM (46.3%-73.9%). In term-equivalent-age neonates, the occipital GM (120.8%) had significantly higher relative CBF values than the frontal GM (103.5%). There was a significant negative correlation between postmenstrual age and the relative CBF of the thalamus (r = - 0.449, P = .010). There were significant positive relationships between postmenstrual age and the relative CBF of the frontal WM (R (2) = 0.298, P = .001) and occipital WM (R (2) = 0.452, P < .001).
CONCLUSIONS: Multidelay arterial spin-labeling with transit time-corrected CBF showed developmental changes and regional differences of CBF in neonates and infants.
DOI
10.3174/ajnr.A5774
PMID
30213808
Appears in Collections:
Journal Papers > School of Medicine / Graduate School of Medicine > Radiology
Journal Papers > School of Medicine / Graduate School of Medicine > Pediatrics & Adolescent Medicine
AJOU Authors
김, 현지이, 장훈최, 진욱한, 미란
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