ISSN: 1899-0967
Polish Journal of Radiology
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vol. 86
Review paper

Imaging spectrum of posterior fossa anomalies on foetal magnetic resonance imaging with an algorithmic approach to diagnosis

Harsha Vardhan Mahalingam
Rajeswaran Rangasami
Suresh Seshadri
Indrani Suresh

Department of Radiology, Sri Ramachandra Medical College and Research Institute (SRMC & RI), Chennai, India
Mediscan Systems, India
© Pol J Radiol 2021; 86: e183-e194
Online publish date: 2021/03/30
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Posterior fossa abnormalities are one of the most common indications for performing foetal magnetic resonance imaging (FMRI). Ultrasonography is the initial imaging modality for assessment of foetal posterior fossa. Abnormal findings on ultrasonography warrant further evaluation with FMRI because it offers excellent soft-tissue contrast resolution and multiplanar capabilities. The neurological prognosis of different posterior fossa anomalies varies widely. FMRI plays a crucial role in confirming the diagnosis, assessing the prognosis, and counselling patients regarding continuation of pregnancy and possible post-natal developmental outcome. In this review we present the imaging spectrum of posterior fossa anomalies that readers can encounter in practice, highlight salient points in favour of each diagnosis, and provide a simplified algorithmic approach to reach the final diagnosis.

congenital, magnetic resonance imaging, prenatal diagnosis, posterior fossa, foetal imaging

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