Instructions for Use
8 Operation
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8.4 Determine Scan Type
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PLEX® Elite 9000 Angiography uses differences between B-scans to
generate contrast associated with the motion of blood through the
vasculature. Angiography uses swept-source frequency filtering to
generate images with detailed vasculature.
To image vascular flow, each B-scan in the scan pattern is repeated
several times consecutively. Comparisons of the signals on consec-
utive B-scans in the same location reveal some areas with signal
change over time and some areas with constant signal. Temporal
signal change in a specific location is considered erythrocyte
motion and indicates a vessel location.
Scan Name
Area
Angio (3mmx3mm)
3 x 3 mm
Angio (6mmx6mm)
6 x 6 mm
Angio (9mmx9mm)
9 x 9 mm
Angio (12mmx12mm)
12 x 12 mm
Angio (15mmx9mm)
15 x 9 mm
Table 10:
Angio Scans
HiRes Tracking
is available (and turned on) for
Angio
(3mmx3mm)
. You can turn off this feature.
8.4.1.2 Cube Scans
PLEX® Elite 9000 Cube scans combine A-scans to generate a series
of B-scans and a 3-D macular thickness map.
Cube scans acquire a series of horizontal scan lines to generate a
cube of data through a grid.
Scan Name
Grid Size
# of Scan Lines
# of A-scans
Cube (12mmx12mm) (1024x1024)
12x12 mm
1024
1024
Cube (12mmx12mm) (800x800)
12x12 mm
800
800
Cube (12mmx12mm) (512x512)
12x12 mm
512
512
Table 11:
Cube Scans
8.4.1.3 HD Scans
Two types of HD Scans are available:
•
Spotlight 1 (16mm) (10-100x)
Spotlight 1 (16mm) (10-100x)
scan generates a single, high-
definition scan with the following features:
– Depth: 3.0 mm
– B-scans:100
– A-scans:1024
– Length: 16 mm (adjustable to 4mm, 6mm, 9mm, 12mm)
Содержание PLEX Elite 9000
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