Zeiss PLEX Elite 9000, Instructions For Use Manual

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8 Operation Instructions for Use
2660021169042 Rev. A 2018-03 8.6 Check Scan Quality
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6. Scan is complete in all windows (no missing data).
7. Light intensity is uniform across the image.
8. Scan passes: RPE Acceptance Criteria [
}
103] .
Retina is not too low in the scan, which impacts sub-RPE slice
detection.
9. Scan passes: Signal Quality Acceptance Criteria [
}
103] .
Signal strength is 6 or higher; shadows and dark spots exhibit
floaters or disease.
10. Scan passes: Decorrelation Tails Acceptance Criteria [
}
104] .
Scan shows accurate motion, no decorrelation tails, no vascu-
lature in the RPE layer, and superficial and deep retinal layers
look appropriately different.
11. Scan passes: Segmentation Acceptance Criteria [
}
104] .
Presence or absence of flow appears in layers as appropriate.
Result
ü
If any criteria listed above are not met, retake the scan.
8.6.4 Acceptance Criteria
When reviewing PLEX® Elite 9000 Angiography Scans for accept-
ability, consider the following:
• RPE Acceptance Criteria [
}
103]
• Signal Quality Acceptance Criteria [
}
103]
• Decorrelation Tails Acceptance Criteria [ } 104]
• Segmentation Acceptance Criteria [
}
104]
Consider all these possibilities before accepting OCT Angiography
scans for further analysis.