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Objectives
Our objectives were: (1) to assess the visualization rate of the choroid bar in a consecutive series of 306 first‐trimester scans; (2) to verify, in this cohort of fetuses, the normality of the posterior fossa later in pregnancy; and (3) to confirm the non‐visualization of the choroid bar in a retrospective series of fetuses with posterior fossa malformations.
Methods
This study included...
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