MR venography in idiopathic intracranial hypertension: unappreciated and misunderstood
| Autor: | Brian Owler, John D. Pickard, Kirsty Harkness, J N P Higgins, Jonathan H. Gillard |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Adult
Male Paper medicine.medical_specialty Adolescent Constriction Pathologic Cranial Sinuses Sensitivity and Specificity Asymptomatic Magnetic resonance angiography Diagnosis Differential Central nervous system disease Reference Values Image Processing Computer-Assisted medicine Humans Prospective Studies Mr venography Prospective cohort study Pathological Aged Lateral Sinus Thrombosis medicine.diagnostic_test business.industry Phlebography Middle Aged Image Enhancement medicine.disease Psychiatry and Mental health Female Surgery Neurology (clinical) Radiology Intracranial Hypertension medicine.symptom Differential diagnosis business Magnetic Resonance Angiography |
| Zdroj: | Journal of Neurology, Neurosurgery & Psychiatry. 75:621-625 |
| ISSN: | 0022-3050 |
| DOI: | 10.1136/jnnp.2003.021006 |
| Popis: | Background: Venous sinus disease must be excluded before diagnosing idiopathic intracranial hypertension but is found only rarely in typical cases. Magnetic resonance venography (MRV) is the technique of choice for investigating this, and provides images that are diagnostic and easy to interpret. However, recent work using more invasive techniques has documented pressure gradients and stenoses in the lateral venous sinuses in many cases of idiopathic intracranial hypertension. Objective: To examine the reason for this discrepancy and to establish whether there are characteristic appearances on MRV in idiopathic intracranial hypertension that are routinely overlooked in clinical practice. Methods: MRVs from 20 patients with idiopathic intracranial hypertension were reviewed, unblinded, by two neuroradiologists, and their appearances rated for focal narrowings and signal gaps. A control group of 40 asymptomatic volunteers, matched for age and sex with the patient group, was recruited prospectively for MRV, and their scans rated in the same way. Results: The lateral sinuses presented a range of appearances with quite different distributions in the two groups (p |
| Databáze: | OpenAIRE |
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