Measurement of Optic Nerve Sheath Diameter: Differences between Methods? A Pilot Study.
Klin Monbl Augenheilkd
; 232(4): 467-70, 2015 Apr.
Article
em En
| MEDLINE
| ID: mdl-25902099
ABSTRACT
BACKGROUND:
Quantification of the optic nerve sheath diameter is a promising approach for the detection of elevated intracranial pressure. The comparability of current methods is unclear. The objective of this study was to assess the relationship between optic nerve sheath diameter as measured with computed tomography, magnetic resonance tomography and ultrasound in patients without known optic nerve disease or increased intracranial pressure. PATIENTS ANDMETHODS:
15 patients (60.8 [years]±16.73 SD; 7 female) with paranasal sinus pathology in whom computed tomography and magnetic resonance imaging were performed underwent optic nerve sheath diameter measurements by ultrasound, as well as an ophthalmological examination. Ultrasound-, computed tomography- and magnetic resonance imaging-derived maximal optic nerve sheath diameter values 3 mm behind the globe were compared.RESULTS:
Optic nerve sheath diameter measured (n=30) by ultrasound (mean 6.2 [mm]±0.84 SD) was significantly (p<0.01) higher than optic nerve sheath diameter in computed tomography (5.2±1.11) or magnetic resonance imaging (5.3±1.14). There was no significant (p=0.24) difference between optic nerve sheath diameter measured in computed tomography and magnetic resonance tomography.CONCLUSIONS:
The comparability of optic nerve sheath diameter measurements in patients without known optic nerve disease and assumed normal intracranial pressure appears to be given between computed tomography and magnetic resonance tomography, while comparability between ultrasound and computed tomography or magnetic resonance tomography seems to be less reliable.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oftalmoscopia
/
Nervo Óptico
/
Aracnoide-Máter
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Imageamento por Ressonância Magnética
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Tomografia Computadorizada por Raios X
/
Ultrassonografia
Tipo de estudo:
Diagnostic_studies
/
Evaluation_studies
Limite:
Female
/
Humans
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Male
/
Middle aged
Idioma:
En
Revista:
Klin Monbl Augenheilkd
Ano de publicação:
2015
Tipo de documento:
Article