视网膜血管分析仪（RVA）——设计与功能

Retinal Vessel Analyzer (RVA)--design and function.

作者信息

Seifertl B U, Vilser W

机构信息

IMEDOS GmbH, Weimar, Germany.

出版信息

Biomed Tech (Berl). 2002;47 Suppl 1 Pt 2:678-81. doi: 10.1515/bmte.2002.47.s1b.678.

DOI:10.1515/bmte.2002.47.s1b.678

PMID:12465272

Abstract

The Retinal Vessel Analyzer (RVA) is a measuring device for online measurement of the diameter of retinal vessels in relation to time and locations along the vessel. It is furthermore provided with several tools for analyzing the measured data. The fundamental components consist of a fundus camera with CCD measuring camera attached and an advanced image-processing unit. The measurement range is from 90 microns, temporal resolution is 40 ms and measurement resolution is less than 1 micron. Systematic error of non-linearity is S < or = 1.6%, reproducibility is given by variation coefficient: short term vcs = 1.5%, long term vcl = 2.8%.

摘要

视网膜血管分析仪（RVA）是一种用于在线测量视网膜血管直径的测量设备，该测量与血管沿线的时间和位置相关。此外，它还配备了几种用于分析测量数据的工具。其基本组件包括一台连接了CCD测量相机的眼底相机和一个先进的图像处理单元。测量范围为90微米，时间分辨率为40毫秒，测量分辨率小于1微米。非线性系统误差S≤1.6%，再现性由变异系数给出：短期变异系数vcs = 1.5%，长期变异系数vcl = 2.8%。