Evaluating Raised Intracranial Pressure Using MR Elastography

Not Applicable

Recruiting

• Conditions: Idiopathic Intracranial Hypertension

• Registration Number: NCT03096743
• Lead Sponsor: Mayo Clinic

Brief Summary

Investigators will compare magnetic resonance (MR) elastography measurements to other forms of noninvasive methods of detecting raised intracranial pressure, including optical coherence tomography (OCT) imaging measurements of the retinal nerve fiber layer (RNFL) and indirect signs of raised intracranial pressure on magnetic resonance imaging (MRI).

Detailed Description

The goal of this study is to evaluate the brain elasticity in patients with idiopathic intracranial hypertension (IIH) and other forms of raised intracranial pressure, such as obstructive hydrocephalus. Investigators will evaluate for a correlation between brain stiffness and opening pressure on lumbar puncture. Investigators will also evaluate for changes in brain stiffness after interventions that are aimed at lowering intracranial pressure, including lumbar punctures, medications, and surgical interventions, such as ventriculoperitoneal shunts. Lastly, investigators will compare MR elastography measurements to other forms of noninvasive methods of detecting raised intracranial pressure, including optical coherence tomography (OCT) measurements of the retinal nerve fiber layer (RNFL) and indirect signs of raised intracranial pressure on MRI.

Study Timeline

• Study First Submitted: 2016-12-15
• Study Start: 2017-01-10
• Study First Submitted QC: 2017-03-24
• Study First Posted: 2017-03-30
• Status Verified: 2025-03
• Last Update Submitted: 2025-03-26
• Last Update Posted: 2025-03-31
• Primary Completion: 2025-12
• Study Completion: 2025-12

Recruitment & Eligibility

• Status: RECRUITING
• Sex: All
• Target Recruitment: 200

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Primary Outcome Measures

Name	Time	Method
MR elastography measurement of the brain elasticity	1-2 weeks prior to lumbar puncture	The primary outcome measure is the difference in the brain elasticity on MR elastography between patients with raised intracranial pressure and those with normal intracranial pressure

Secondary Outcome Measures

Name	Time	Method
MRI finding	1--2 weeks prior to lumbar puncture	The secondary outcome measurement are the retinal nerve fiber layer (RNFL) thickness and Bruch's membrane configuration on the MRI findings of raised intracranial pressure (optic nerve sheath diameter and pituitary/sella ratio). The cutoff from abnormal-to-normal will be established. The sensitivity and specificities will be established and compared against the other secondary outcome measurements and against MR elastography.
Ocular Coherence Tomography (OCT) finding	1--2 weeks prior to lumbar puncture	The secondary outcome measurements are the retinal nerve fiber layer (RNFL) thickness and Bruch's membrane configuration using ocular coherence tomography (OCT) of raised intracranial pressure (optic nerve sheath diameter and pituitary/sella ratio). The cutoff from abnormal-to-normal will be established. The sensitivity and specificities will be established and compared against the other secondary outcome measurements and against MR elastography
Optic Nerve B-scan ultrasound finding	1--2 weeks prior to lumbar puncture	The secondary outcome measurement are the retinal nerve fiber layer (RNFL) thickness and Bruch's membrane configuration on the optic nerve B-scan ultrasound findings of raised intracranial pressure (optic nerve sheath diameter and pituitary/sella ratio). The cutoff from abnormal-to-normal will be established. The sensitivity and specificities will be established and compared against the other secondary outcome measurements and against MR elastography.

Trial Locations

Locations (1)

Mayo Clinic in Rochester; 🇺🇸 Rochester, Minnesota, United States