Onh Overlay And Angio Metrix Bar; Selected Scan; Angioplex Metrix In Change Analysis - Zeiss CIRRUS HD-OCT 500 User Manual

9-22
Overview

ONH Overlay and Angio Metrix Bar

Fundus Image: Overlays both the AngioPlex image and the Structure image with the
Fundus Image.
Remove Projections: Filters out any projections. Projection artifacts can potentially give
false information about blood vessels.
Slice Navigators: Overlays the blue (fast B-scans) and magenta (slow B-scans) on the
images. Turn them off by deselecting the option.
B-Scan Flow: Enables the use of either one or two colors in the B-Scan when viewing its
flow. A single color shows all aspects of the flow in red. Two colors overlays the scan so the
red will overlay the data lying above the RPE and green will overlay data lying below
the RPE.
Segmentation Lines: Adds the dashed magenta lines to the segment viewport.
Map: Displays the density of perfusion.
Trace: Indicates where flow is detected.
Transparency: Active when you are using a prior scan. This option provides visual control of
prior scans. Transparency is relative to the Map and Trace overlays.
Show Grid: Shows/hides the circle with the quadrants from the view. The values shown
display the P and F numbers.

Selected Scan

The Selected Scan is the scan you had selected from the scan list, prior to selecting
Angiography Change Analysis. The date of the exam is shown above the scan images.

AngioPlex Metrix in Change Analysis

The AngioPlex Metrix features described in "ONH Overlay and Angio Metrix Bar"
on page 9-22
are available from the Angiography Change Analysis screen for OCT
Angiography and for Montage individual scan images when the Superficial Preset is
selected. You can not edit the FAZ outline in the Change Analysis.
In the Angiography Change Analysis, the ETDRS and FAZ tables are expanded to include
the densities of the previous scan, the current scan, and the difference between the two.
This option is available for ONH Angiography, and provides the ability to quantify RNFL
microvasculature around the ONH. However, you must select toggle icon in the upper-right
area of the ONH Angiography Change Analysis screen to display it.
2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User Manual