Interobserver repeatability of heidelberg retinal flowmetry using pixel-by-pixel analysis
| Autor: | Brent Siesky, Hanna J. Garzozi, Carlos Rospigliosi, Itay Ben Zion, L. Jay Katz, Alon Harris, Matthew Ralstin, Adam Werne, L. McCranor, Danny Moore, William N. Steinmann |
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| Rok vydání: | 2009 |
| Předmět: |
Male
medicine.medical_specialty Percentile Intraclass correlation Exfoliation Syndrome Flow measurement Ophthalmology Image Processing Computer-Assisted Laser-Doppler Flowmetry Medicine Humans Mean flow Aged Observer Variation business.industry Reproducibility of Results Retinal Vessels Blood flow Repeatability Confidence interval medicine.anatomical_structure Regional Blood Flow Female Ocular Hypertension business Blood Flow Velocity Glaucoma Open-Angle Software Optic disc |
| Zdroj: | Journal of glaucoma. 18(4) |
| ISSN: | 1536-481X |
| Popis: | PURPOSE To determine the interobserver reproducibility of Heidelberg retinal flowmeter (HRF) blood flow measurements using independently selected study areas for pixel-by-pixel analysis. PATIENTS AND METHODS Blood flow measurements were performed on 257 scans from 15 patients, 14 of whom had glaucoma or ocular hypertension. HRF was used to record capillary perfusion in a 2560x640 mum area of the supratemporal peripapillary region and pixel-by-pixel analysis was performed from an area adjacent to the optic disc with a minimum of 1600 pixels. Each observer independently selected the area for analysis. The percentage of pixels with |
| Databáze: | OpenAIRE |
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