Vermian maturity assessment (approach)
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At the time the article was created Subash Thapa had no recorded disclosures.View Subash Thapa's current disclosures
At the time the article was last revised Henry Knipe had no recorded disclosures.View Henry Knipe's current disclosures
Radiological evaluation of the posterior fossa is an essential part of the routine fetal assessment, including vermian maturity assessment.
Ultrasonography is a readily available diagnostic tool in the assessment of the fetal posterior fossa but is sometimes limited due to a variety of pathologies that can look similar and even identical on standard axial ultrasonography. Also, true sagittal and coronal views of the posterior fossa are difficult to achieve, leading to false positive vermian pathologies 1. The use of fetal MRI is extremely useful in difficult cases.
The role of MRI includes 2:
- documentation of the normal MRI landmarks of developing fetal posterior fossa
- prediction of poor neurological prognosis by assessment of the degree of lobulation
- diagnostic strategy in difficult cases, e.g. Dandy-Walker continuum, vermian hypoplasia, mega cisterna magna, posterior fossa arachnoid cyst
MRI assessment of vermian maturity includes 3:
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