[optimal] Re: From Denice re Spectralis Segmentation
- From: copcphotography@xxxxxxxxxxxxxxxxx
- To: optimal@xxxxxxxxxxxxx
- Date: Fri, 20 Sep 2013 15:45:05 -0400 (EDT)
can't rely on the computers - as you know - this requires the trained human
touch. But I'm preaching to the choir here.
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From: "CPMC Ophthalmic Diagnostic Center" <cpmceyelab@xxxxxxxxxxxxxxxx>
Sent: Friday, September 20, 2013 2:46pm
To: "'optimal@xxxxxxxxxxxxx'" <optimal@xxxxxxxxxxxxx>
Cc: "'spectralis-user-group@xxxxxxxxxxxxxxxx'"
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Subject: [optimal] Re: From Denice re Spectralis Segmentation
I am careful, and when performing the scans check to make sure that the overall
scan is centered in the monitor, and the smaller circle is dead center on the
neural rim, taking multiple scans.
But, having said that, I don’t generally monkey with the segmentation unless it
is grossly off. I was surprised to see how easy it was, with a very minute
change in only ONE segmentation dot, I was able to shift the balance from
yellow to Red.
Also, I have NOT been checking EACH scan to make sure that the green plus sign
is DEAD center in the entrance of the central retinal artery. Should I? Case
in point, had I shifted this green circle a “smidge” to the left, I could have
arguably really influenced the outcome.
See attached.
Denice
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
From: optimal-bounce@xxxxxxxxxxxxx [mailto:optimal-bounce@xxxxxxxxxxxxx] On
Behalf Of copcphotography@xxxxxxxxxxxxxxxxx
Sent: Friday, September 20, 2013 11:19 AM
To: optimal@xxxxxxxxxxxxx
Subject: [optimal] Re: From Denice re Spectralis Segmentation
Hi Denise
I use the Cirrus here, and know that you have to look at the placement of each
RNFL crosshair placement for just that reason, the machine can place the ON
center so far off that you end up with really bad results!
I know to look for that problem, but the fill-in techs that are just thrown
into the camera room have no clue-even tho samples are posted about what to
look for.
Lori
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From: "CPMC Ophthalmic Diagnostic Center" <[mailto:cpmceyelab@xxxxxxxxxxxxxxxx]
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Sent: Friday, September 20, 2013 1:49pm
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optimal@xxxxxxxxxxxxx>
Cc: "'spectralis-user-group@xxxxxxxxxxxxxxxx'"
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Subject: [optimal] From Denice re Spectralis Segmentation
Somewhat alarmed to see today that two separate RNFL scans, seemingly
reasonable well centered, can show such different results based on where the
instrument choses to segment.
A very slight, nearly inperceptable adjustment on my part took this patient out
of the red zone and back into borderline.
Your thoughts? ART set at 16. Too much? Too little?
Denice Barsness, CRA, COMT, ROUB, CDOS, FOPS
Ophthalmic Diagnostic Center
CPMC Department of Ophthalmology
2100 Webster Street Suite 212
San Francisco CA 94115
(415) 600-3937 FAX (415) 600-6563
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