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  • Title: [MRI diagnosis and analysis of 104 cases of fetal ventriculomegaly by ultrasonography].
    Author: Liu CX, Yin SW, Chen J.
    Journal: Zhonghua Fu Chan Ke Za Zhi; 2008 Sep; 43(9):666-9. PubMed ID: 19087516.
    Abstract:
    OBJECTIVE: To evaluate the diagnostic value of MRI in the cases suspected of ventriculomegaly by prenatal ultrasonography. METHODS: 104 patients of suspected fetal ventriculomegaly (VM) diagnosed by ultrasonography were included from the Shengjing Hospital, China Medical University from March 2006 to October 2007. All cases were divided into 4 groups based on the standard of Gaglioti: 10 - 12 mm (66 cases), 13 - 15 mm (22 cases), 16 - 20 mm (14 cases), and 21 - 25 mm (2 cases); they included 75 cases of single intracerebroventricular expansion and 29 cases of double intracerebroventricular expansion. All of them were subjected to MRI scan within 48 h of ultrasonographic examination to determine the prenatal diagnosis by MRI pregnancy outcomes. RESULTS: Among the 26 072 cases who received prenatal ultrasonography, 104 cases (0.39%) were VM. (1) MRI detected 3 cases (5%) in 10 - 12 mm group: one case of cerebellar hypoplasia, vascular malformation, chest and abdominal anomalies each; 5 cases (23%) in 13 - 15 mm group: one case of agenesis of corpus callosum (ACC), cerebral hemorrhage, cerebral hemorrhage with cerebral meningocele, cerebral meningocele, intracranial mass meningocele each; 6 cases(43%)in 16 - 20 mm group: 4 cases of ACC, one case of intraventricular hemorrhage and ACC combined with ventricular hemorrhage each; 2 cases in 21 - 25 mm group: one case of ACC and intraventricular hemorrhage each. (2) MRI detected 4 cases (5%) among 75 unilateral VM cases and 12 cases (41%) among 29 bilateral VM cases. The differences were significant (P < 0.01). MRI diagnosis rate was 15.38% (16 cases). Follow-up of the outcomes of the pregnancy showed induction of labor in 15 cases (14%) all of which were the same as MRI results on autopsy, full-term delivery of 88 cases, of which all the neonates were healthy. CONCLUSIONS: When the expansion width is above 16 mm or bilateral VM is suspected by ultrasonography, we suggest MRI examination to determine fetal central nervous system disease.
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