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Abstract #10643 Published in IGR 6-2
A 3-dimensional ultrasound C-scan imaging technique for optic nerve measurements
Garcia JP Jr; Garcia PT; Rosen RB; Finger PTOphthalmology 2004; 111: 1238-43
PURPOSE: To evaluate the use of 3-dimensional ultrasound C-scan imaging for optic nerve diameter measurements. DESIGN: Prospective observational case series. PARTICIPANTS: Thirty-eight normal eyes of 32 healthy adults. METHODS: Coronal C-scans of 38 normal optic nerves were imaged 3 mm behind the globe. MAIN OUTCOME MEASURES: Optic nerve sheath diameter (ONSD) and optic nerve diameter (OND). RESULTS: Mean ONSD was 4.8 mm (range: 3.9-5.9; SD 0.6), whereas mean optic OND was 1.9 mm (range: 1.8-2.1; SD 0.1). Mean ONSDs were 4.9 mm (male), 4.5 mm (female), 5.0 mm (subjects younger than 50 years), and 4.6 mm (subjects 50 and older). CONCLUSION: Coronal C-scans generated from 3-dimensional ultrasound can be used to measure the optic nerve diameters in adult eyes.
The New York Eye & Ear Infirmary, New York, New York, USA.
Classification:
2.15 Optic nerve (Part of: 2 Anatomical structures in glaucoma)
6.12 Ultrasonography and ultrasound biomicroscopy (Part of: 6 Clinical examination methods)
