No abstract

No abstract

BACKGROUND AND PURPOSE: Clinical and imaging manifestations of idiopathic intracranial hypertension should prompt early diagnosis and treatment to avoid complications. Multiple diagnostic imaging criteria are reported to suggest the diagnosis of idiopathic intracranial hypertension with questionable sensitivity and/or specificity. Increased intracranial pressure results in dilation of the perineural cisternal spaces such as the optic nerve sheaths and the Meckel cave. It may also cause protrusion of cisternal structures of the Meckel cave through the skull base foramina, which could result in indentation or a bilobed appearance of the Meckel cave. We investigated the changes in the Meckel cave in patients with proved idiopathic intracranial hypertension versus healthy controls. MATERIALS AND METHODS:We studied 75 patients with a diagnosis of idiopathic intracranial hypertension and 75 age-and sexmatched healthy controls. The transverse diameter of Meckel cave was measured in the axial and coronal planes of T2-weighted MR imaging sequences, and comparison was made between the 2 groups.

No abstract

We describe a case series of imaging findings of 4 patients who underwent spinal dysraphisms repair in utero with novel patch material, cryopreserved human umbilical cord, in our institution. In our study, the prenatal and postnatal magnetic resonance imaging and ultrasound are reviewed and showed cord tethering and syrinx progression in all cases. Our report is the first description of magnetic resonance imaging and ultrasound findings in the context of using this novel patch in severe cases of spinal dysraphisms.

No abstract

This review article is a pictorial review of the wide variety of brain and spine CT and MR imaging findings related to coronavirus disease 2019 (COVID-19) in patients with neurologic deficits. By classifying CNS manifestations according to their pathogenesis, we provide different examples of vascular, immunologic, infectious, and miscellaneous complications associated with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. We present cases encountered during the pandemic, retrieved from a large health system.Learning Objectives: To review the spectrum of common and uncommon brain and spine neuroimaging findings of COVID-19 and describe the key imaging features for each finding

Seizures have been reported in association with idiopathic intracranial hypertension in pediatric patients. Magnetic resonance imaging (MRI) signs of intracranial hypertension have not been investigated before in pediatric patients with new-onset idiopathic seizures. MRI scans of 182 pediatric patients were retrospectively analyzed for imaging findings of intracranial hypertension, including 46 patients with new-onset idiopathic seizures and elevated cerebrospinal fluid opening pressure, 40 patients with new-onset idiopathic seizures and normal opening pressure, 56 patients with confirmed idiopathic intracranial hypertension, and 40 age- and sex-matched controls. The optic nerve sheath diameter is significantly larger in the group with new-onset idiopathic seizures and elevated opening pressure (mean diameter of 6.02 ± 0.45 mm) compared to patients with new-onset idiopathic seizures and normal opening pressure (mean diameter of 5.24 ± 0.50 mm) ( P value <.001). The cutoff value of 6.0 mm for optic nerve sheath diameter showed 63% sensitivity and 88% specificity to differentiate pediatric patients with seizures and elevated opening pressure from those with seizures and normal opening pressure. Conclusion A cutoff value of 6.0 mm for optic nerve sheath dilation may be used as a screening imaging marker to suspect elevated opening pressure with specificity of 88% in pediatric patients with new-onset idiopathic seizures.