High-resolution rapid neonatal whole-body composition using 3.0 Tesla chemical shift magnetic resonance imaging. Academic Article uri icon

Overview

abstract

  • BackgroundTo evaluate a whole-body rapid imaging technique to calculate neonatal lean body mass and percentage adiposity using 3.0 Tesla chemical shift magnetic resonance imaging (MRI).MethodsA 2-Point Dixon MRI technique was used to calculate whole-body fat and water images in term (n=10) and preterm (n=15) infants.ResultsChemical shift images were obtained in 42 s. MRI calculated whole-body mass correlated closely with measured body weight (R2=0.87; P<0.001). Scan-rescan analysis demonstrated a 95% limit of agreement of 1.3% adiposity. Preterm infants were born at a median of 25.7 weeks' gestation with birth weight 840 g. At term-corrected age, former preterm infants were lighter than term-born controls, 2,519 vs. 3,094 g regressing out age and group as covariates (P=0.005). However, this was not because of reduced percentage adiposity 26% vs. 24% (P=0.28). At term-corrected age, former preterm infants had significantly reduced lean body mass compared with that of term-born controls 1,935 vs. 2,416 g (P=0.002).ConclusionRapid whole-body imaging for assessment of lean body mass and adiposity in term and preterm infants is feasible, accurate, and repeatable. Deficits in whole-body mass in former preterm infants at term-corrected age are due to reductions in lean body mass not due to differences in adiposity.

publication date

  • December 20, 2017

Research

keywords

  • Adipose Tissue
  • Adiposity
  • Anthropometry
  • Body Composition
  • Magnetic Resonance Imaging
  • Whole Body Imaging

Identity

Scopus Document Identifier

  • 85045583932

Digital Object Identifier (DOI)

  • 10.1038/pr.2017.294

PubMed ID

  • 29168981

Additional Document Info

volume

  • 83

issue

  • 3