RT Journal Article
SR Electronic
T1 Corroboration of Normal and Abnormal Fetal Cerebral Lamination on Postmortem MR Imaging with Postmortem Examination
JF American Journal of Neuroradiology
JO Am. J. Neuroradiol.
FD American Society of Neuroradiology
SP 1987
OP 1993
DO 10.3174/ajnr.A2193
VO 31
IS 10
A1 Widjaja, E.
A1 Geibprasert, S.
A1 Mahmoodabadi, S. Zarei
A1 Brown, N.E.
A1 Shannon, P.
YR 2010
UL http://www.ajnr.org/content/31/10/1987.abstract
AB BACKGROUND AND PURPOSE: The presence of normal fetal cerebral lamination of the germinal matrix, intermediate zone, subplate layer, and cortex can be used as a marker of normal fetal cerebral development. Our aim was to compare postmortem MR imaging assessment of normal and abnormal fetal cerebral lamination on T1- and T2-weighted images with histopathology. MATERIALS AND METHODS: Fifty-five formalin-fixed brains from postmortem fetuses, ranging from 16 to 30 weeks' gestational age, mean of 23 weeks, underwent T1- and T2- weighted MR imaging and subsequent sectioning and histologic examination. The cerebral lamination was graded as normal or abnormal on T1- and T2-weighted imaging and compared with postmortem findings. The sensitivity, specificity, and positive and negative predictive values of T1 and T2 assessment of cerebral lamination were calculated. RESULTS: Twenty-six fetuses had abnormal and 29 had normal cerebral lamination on histology. On T1, the overall sensitivity, specificity, and positive and negative predictive values of evaluating cerebral lamination were 96.15%(CI, 78.42%–99.80%), 89.66%(CI, 71.50%–97.29%), 89.29%(CI, 70.63%–97.19%), and 96.29%(CI, 79.11%–99.80%), respectively. On T2, the overall sensitivity, specificity, and positive and negative predictive values of evaluating cerebral lamination were 73.08%(CI, 51.95%–87.65%), 96.55%(CI, 80.37%–99.82%), 95.00%(CI, 73.06%–99.74%), and 80.00%(CI, 62.54%–90.94%), respectively. CONCLUSIONS: Postmortem MR imaging has high sensitivity, specificity, and positive and negative predictive values in assessing fetal cerebral lamination compared with histology. T1-weighted imaging has a higher sensitivity and negative predictive value, while T2-weighted imaging has a higher specificity and positive predictive value. CcortexCIconfidence intervalGgerminal matrixIintermediate zoneMRIMR imagingNPVnegative predictive valuePPVpositive predictive valueSsubplate layer