期刊
NEUROIMAGE
卷 56, 期 1, 页码 8-20出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.neuroimage.2011.01.051
关键词
Human; Neonate; Atlas; Magnetic resonance imaging; Diffusion tensor imaging
资金
- National Institutes of Health from the National Institute of Aging (NIA) [R21AG033774, AG20012, P50AG05146]
- National Institutes of Health from the National Institute of Neurological Disorders and Strokes (NINDS) [U54NS NS56883]
- National Institutes of Health from the National Institute on Drug Abuse (NIDA) [2K24DA16170]
- National Institutes of Health from the National Center for Research Resources (NCRR) [P41 RR015241, G12-RR003061]
MRI is a sensitive method for detecting subtle anatomic abnormalities in the neonatal brain. To optimize the usefulness for neonatal and pediatric care, systematic research, based on quantitative image analysis and functional correlation, is required. Normalization-based image analysis is one of the most effective methods for image quantification and statistical comparison. However, the application of this methodology to neonatal brain MRI scans is rare. Some of the difficulties are the rapid changes in T1 and T2 contrasts and the lack of contrast between brain structures, which prohibits accurate cross-subject image registration. Diffusion tensor imaging (DTI), which provides rich and quantitative anatomical contrast in neonate brains, is an ideal technology for normalization-based neonatal brain analysis. In this paper, we report the development of neonatal brain atlases with detailed anatomic information derived from DTI and co-registered anatomical MRI. Combined with a diffeomorphic transformation, we were able to normalize neonatal brain images to the atlas space and three-dimensionally parcellate images into 122 regions. The accuracy of the normalization was comparable to the reliability of human raters. This method was then applied to babies of 37-53 post-conceptional weeks to characterize developmental changes of the white matter, which indicated a posterior-to-anterior and a central-to-peripheral direction of maturation. We expect that future applications of this atlas will include investigations of the effect of prenatal events and the effects of preterm birth or low birth weights, as well as clinical applications, such as determining imaging biomarkers for various neurological disorders. (C) 2011 Elsevier Inc. All rights reserved.
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