Primary Intracranial hypotension and MRI – Case Reports

Abstract

Intracranial hypotension (IH) is an uncommon, benign and self-limiting condition caused by low cerebrospinal fluid pressure and presents with orthostatic headache as chief complaint but these symptoms are not specific to intracranial hypotension and therefore misdiagnosis is common. The most prominent feature of intracranial hypotension on MRI is “brain sagging”. Further evaluation in most cases reveal CSF leakage through a dural defect with no identifiable cause resulting in low CSF pressure and volume. With the use of different diagnostic measurements and angles, the MRI detection of Intracranial hypotension has improved.

Keywords: Intracranial hypotension, Magnetic resonance imaging, cerebrospinal fluid pressure