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Background The idiopathic intracranial hypertension is a disease that is represented by high intracranial pressure of unknown reason. The visual disturbance presents the main medical problem of this syndrome. This study was conducted to assess the diagnostic value of the optic nerve sheath diameter (ONSD) measured using MRI 3D DRIVE in the diagnosis of idiopathic intracranial hypertension. Results The mean value of the ONSD measured using 3D DRIVE sequence in the patient group (5.81 ± 0.33) was significantly higher than the mean value of the normal control group (4.95 ± 0.45) ( p  < 0.001). The optimal optic nerve sheath diameter cut-off value for diagnosing idiopathic intracranial hypertension was > 5.31 mm, with 94.12% sensitivity and 93.3% negative predictive value. Conclusion The high resolution of 3D DRIVE provides an accurate measurement of ONSD which correlated with elevated cerebrospinal fluid pressure and hence the diagnosis of idiopathic intracranial hypertension.

the egyptian journal of radiology and nuclear medicine /the egyptian journal of radiology and nuclear medicine

MRI measurement of optic nerve sheath diameter using 3D driven equilibrium sequence as a non-invasive tool for the diagnosis of idiopathic intracranial hypertension