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Accutome B-Scan Plus User Guide
Probe Positions
One of the great features of the Accutome B-Scan Plus
is the ability to use the probe in any position and be able
to quickly and easily label the scan view.
There are three major positions for holding the probe
whe
n you scan. Within these positions there are slices
that correspond to the hours of a clock. A position label
consists of the probe position and slice position. The
three probe positions are:
Axial
Longitudinal
Transverse
Depending upon the purpose of your scan; e.g. basic
scan vs. scann
ing for a pathology will determine which
probe position you use. When scanning you move the
probe around the eye within each of these positions. A
brief summary of the three positions follows.
Axial Probe Positions
An Axial B-Scan is a slice aligned through the center of
the lens with the shadow of the optic nerve centered on
the right of the scan.
Axial scans are labeled accordin
g to the orientation of
the marker, followed by "AX". If the scan is performed
with the marker aimed superiorly or vertical, the scan
can be labeled 12AX. For a horizontal scan the marker
should be aimed nasally and labeled 3AX for the right
eye, or 9AX for the left eye. For an oblique scan, aim the
marker at the oblique clock hour (which will place that
meridian at the top of the display screen) while retaining
the patient’s gaze and the probe face centered on the
cornea; i.e. 2:00, 9:30 etc.
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