Developmental features of the neonatal brain: MR imaging. Part II. Ventricular size and extracerebral space

C. B. McArdle, Carol Richardson, D. A. Nicholas, M. Mirfakhraee, C. K. Hayden, E. G. Amparo

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Abstract

Magnetic resonance (MR) imaging with a 0.6-T magnet was performed on 51 neonates, aged 29-42 weeks postconception. In 45 neonates, the ventricular/brain ratio (V/B) at the level of the frontal horns and midbody of the lateral ventricles ranged from 0.26 to 0.34. In six other infants a V/B of 0.36 or greater was associated with either cerebral atrophy or obstructive hydrocephalus. The width of the extracerebral space measured along specified points varied little in the neonatal period and ranged from 0 to 4 mm in 48 infants. Extracerebral space widths of 5-6 mm were seen in three other infants with severe asphyxia. Prominence of the subarachnoid space overlying the posterior parietal lobes is normal in neonates and should not be confused with cerebral atrophy. The authors conclude that V/B ratios of 0.26-0.34 and extracerebral space widths of 0-4 mm represent the normal range, and that neonates whose measurements exceed these values should be followed up.

Original languageEnglish (US)
Pages (from-to)230-234
Number of pages5
JournalRadiology
Volume162
Issue number1
StatePublished - 1987

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ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

Cite this

McArdle, C. B., Richardson, C., Nicholas, D. A., Mirfakhraee, M., Hayden, C. K., & Amparo, E. G. (1987). Developmental features of the neonatal brain: MR imaging. Part II. Ventricular size and extracerebral space. Radiology, 162(1), 230-234.