biostudies-literatureUnknown38(7)George JM<h4>Background and purpose</h4>The diagnostic and prognostic potential of brain MR imaging before term-equivalent age is limited until valid MR imaging scoring systems are available. This study aimed to validate an MR imaging scoring system of brain injury and impaired growth for use at 29 to 35 weeks postmenstrual age in infants born at <31 weeks gestational age.<h4>Materials and methods</h4>Eighty-three infants in a prospective cohort study underwent early 3T MR imaging between 29 and 35 weeks' postmenstrual age (mean, 32⁺² ± 1⁺³ weeks; 49 males, born at median gestation of 28⁺⁴ weeks; range, 23⁺⁶-30⁺⁶ weeks; mean birthweight, 1068 ± 312 g). Seventy-seven infants had a second MR scan at term-equivalent age (mean, 40⁺⁶ ± 1<AJNR. American journal of neuroradiology1435-1442https://www.ebi.ac.uk/biostudies/studies/S-EPMC7959923biostudies-literatureValidation of an MRI Brain Injury and Growth Scoring System in Very Preterm Infants Scanned at 29- to 35-Week Postmenstrual Age.PMC7959923Bursle JCoulthard AGeorge JMFiori SGuzzetta ARose SEBoyd RNMoldrich RXWare RSColditz PBFripp JPannek KfalseValidation of an MRI Brain Injury and Growth Scoring System in Very Preterm Infants Scanned at 29- to 35-Week Postmenstrual Age.<h4>Background and purpose</h4>The diagnostic and prognostic potential of brain MR imaging before term-equivalent age is limited until valid MR imaging scoring systems are available. This study aimed to validate an MR imaging scoring system of brain injury and impaired growth for use at 29 to 35 weeks postmenstrual age in infants born at <31 weeks gestational age.<h4>Materials and methods</h4>Eighty-three infants in a prospective cohort study underwent early 3T MR imaging between 29 and 35 weeks' postmenstrual age (mean, 32⁺² ± 1⁺³ weeks; 49 males, born at median gestation of 28⁺⁴ weeks; range, 23⁺⁶-30⁺⁶ weeks; mean birthweight, 1068 ± 312 g). Seventy-seven infants had a second MR scan at term-equivalent age (mean, 40⁺⁶ ± 1<2017-01-01T00:00:00Z2017 Jul2025-04-05T15:24:32.924Z2025-04-05T15:24:32.924ZS-EPMC79599232852265910.3174/ajnr.A519110.3174/ajnr.a5191