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Address reprint requests to A. James Barkovich, Neuroradiology Section, Room L-371, University of California, San Francisco, 505 Parnassus Ave, San Francisco, CA 94143. Index terms: Brain, diseases; Infants, newborn; Special reports AJNR 18:1816â1820, Nov 1997 0195-6108/97/1810 â1816 © American Society of Neuroradiology AJNR: 18, November 1997 is particularly useful in the imaging of premature neonates, who have small brains and unstable circulatory systems. Moreover, the availability of Doppler sonography has added a new dimension to the arsenal of the sonographer, who can detect altered resistive indexes in neonates who have suffered hypoxic-ischemic injury (1â3). CT CT is more useful in older children than in neonates. The main reason for the limited utility in neonates is the high water content of the neonatal brain, which reduces contrast between normal and injured tissue. CT is least useful in premature neonates, in whom white matter injury is most common; it is more useful in term neonates, who are more likely to have suffered gray matter injury (4 â 6). In terms of the difficulty of examination, CT is intermediate between sonography and MR imaging. The patient must be moved to the CT suite, but is easily monitored during the examination and
American Journal of Neuroradiology – American Journal of Neuroradiology
Published: Jan 1, 1997
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