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- W2046111750 abstract "To take precise biometric measures of the pons on ultrasound scans and to establish detailed anatomical criteria for the brainstem. We carried out an ultrasound study of 913 fetuses from a low-risk population, at 21 to 36 weeks of pregnancy. The anterior-posterior diameter of the pons and the maximum vermis height were determined on posterior median sagittal sections, to establish growth curves. On the same sections, we also analysed the vaulting of the pons and its specific echostructure, the sulcus and the primary vermal fissure. The pons and the vermis were correctly measured in 96.70% of cases and their growth was regular. The mean diameter of the pons increased from 8.4 mm at 22 weeks of gestation to 12.9 mm at 32 weeks of gestation. Mean vermis height increased from 12.4 mm at 22 weeks of gestation to 20.4 mm at 32 weeks of gestation. The pons was analysed in 99% of cases; the sulcus, the echostructure and the vermal fissure were visualised in 87% of cases. The vermis/pons ratio was stable. Intra-operator variability was assessed. Posterior median sagittal sections provide the only means of evaluating the biometry and morphology of the fetal brainstem in current practice. This approach facilitates effective diagnosis in cases of ponto-cerebellar hypoplasia." @default.
- W2046111750 created "2016-06-24" @default.
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- W2046111750 date "2006-08-31" @default.
- W2046111750 modified "2023-09-25" @default.
- W2046111750 title "OP03.04: Echography of the fetal brainstem: a biometric and anatomical study" @default.
- W2046111750 doi "https://doi.org/10.1002/uog.3111" @default.
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