Cirrus Oct Angiography; Overview; Cirrus Oct Angiography, Montage Angio, And Onh Angiography Analysis - Zeiss CIRRUS HD-OCT 500 User Manual

9 CIRRUS OCT Angiography

Overview

CIRRUS OCT Angiography, Montage Angio, and ONH Angiography Analysis

CIRRUS HD-OCT User Manual
CIRRUS OCT Angiography (AngioPlex
retinal and choroidal vasculature. Careful review of CIRRUS OCT Angiography scans should
be carried out before accepting scanned images, as described in
Angiography Acceptance Criteria" on page
recommended that, during CIRRUS OCT Angiography image analysis, you re-assess the
possible impact of scan quality, segmentation errors, and decorrelation tails.
Angiography scan slabs can be acquired in 3x3, 6x6, and 8x8 mm, but only 3x3 mm and
6x6 mm scans include the additional metrics available. Montage Angio scan slabs can be
acquired in 6x6 mm and 8x8 mm and analyzed in both. Additionally, ONH Angiography
scan slabs can be acquired in 4.5x4.5 mm and analyzed. AngioPlex scans can be analyzed
using the methods and metrics shown in Table 9-1. These methods are described in the
sections which follow.
Scan Acquisition Analysis
Angio Scan OCT Angiography
3x3 / 6x6 / 8x8 OCT Angiography Change
OCT Angiography Change (
En Face
Montage Angio Montage Angio Analysis
6x6 / 8x8
ONH Angiography OCT Angiography
4.5x4.5 OCT Angiography Change
OCT Angiography Change (
Table 9-1 CIRRUS OCT Angiography
The CIRRUS OCT Angiography Analysis screen
screen (Figure 9-2), and ONH Angiography Analysis screen
Angiography Analysis option in CIRRUS OCT.
For all CIRRUS OCT Angiography Analysis options (Angiography, Montage Angio, and ONH
Angiography), the left side of the screen (1) displays pre-defined angiography slabs or
"Presets" (and user-defineable or "custom" presets), which are arranged in 1 or 2 columns.
The preset slabs for both Angiography, Montage Angio, and ONH Angiography are
discussed in detail in "CIRRUS OCT Angiography Presets" on page
®
) provides non-invasive, high quality images of the
7-7. Even after scan acceptance, it is
Additional Metrics
Available
Vessel / Perfusion Density
Foveal Avascular Zone (FAZ)
Manual
) Applies to 3x3 mm and
6x6 mm scans only.
Perfusion Density / Flux Index
Manual
)
(Figure 9-1), Montage Angio Analysis
(Figure
2660021169012 Rev. A 2017-12
9-1
Overview
"CIRRUS OCT
9-3) are used for the
9-4.