Zeiss CIRRUS HD-OCT 500, Руководство пользователя

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CIRRUS HD-OCT User Manual 2660021169012 Rev. A 2017-12
Appendix
B-7
Table B-5: Repeatability Standard Deviation in micrometers for Central Subfield
Measurements using CIRRUS 3.0 for the 200x200 Scan and for the 512x128 Scan.
Table B-6: Repeatability Standard Deviation
a
in micrometers for Central Subfield
Measurements on the 200x200 scan using CIRRUS 3.0 Macular Thickness Analysis
(MTA), CIRRUS 4.0 MTA with the ability to adjust the Fovea Position, and CIRRUS
4.0 Macular Change Analysis, which uses Registration and Fovea Placement.
CSMT Repeatability Standard Deviation
a
( μ m)
N 200x200 N 512x128
AMD 77 17.5 66 11.6
DR 51 16.8 50 13.7
VRI 44 14.4 44 8.4
Other 62 10.1 61 9.5
ME 41 13.5 39 27.2
No disease 44 4.8 47 3.6
a. Repeatability Limit is the upper 95% limit for the difference between repeated results. For this study, two
scans were acquired per subject during a single visit on a single system by a single operator at one of
four sites. ISO 5725–1 and ISO 5725–6, Repeatability limit = 2.8 – Repeatability SD.
N
Mean ±SD
CSMT ( μ m)
for CIRRUS 4.0
MTA
CSMT Repeatability
Standard Deviation ( μ m)
CIRRUS 3.0 MTA
CIRRUS 4.0 MTA
with fovea
placement
CIRRUS 4.0 MCA
with registration
and fovea
placement
AMD 77 255 ±65 17.5 6.3 8.7
DR 51 335 ±109 16.8 9.8 8.1
VRI 44 360 ±128 14.4 5.4 4.3
Other 62 303 ±114 10.1 7.5 4.5
ME 41 339 ±141 13.5 7.9 7.0
No disease 44 256 ±21 4.8 2.2 2.5
a. Repeatability Limit is the upper 95% limit for the difference between repeated results. For this study, two scans were acquired per subject
during a single visit on a single system by a single operator at one of four sites. ISO 5725–1 and ISO 5725–6, Repeatability limit = 2.8
– Repeatability SD.