GE LOGIQ e, Базовое руководство по обслуживанию

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Functional checks
LOGIQ e – Basic Service Manual 4-35
5461614-100 English Rev. 6
6 Trace Direction Allows to select different trace direction.
7 Invert Vertically inverts the spectral trace without
affecting the baseline position. Press invert to
invert the spectral trace. The Plus and Minus
signs on the velocity scale reverse when the
spectrum is inverted.
8 Auto Calcs Enables or disables auto calculation.
9 Modify Auto Calcs Activates the window to modify the auto
calculation items.
10 Trace Method Allows to select different trace method.
11 Activate Colorize Colorize the gray scale image to enhance the
eyes’ discrimination capability. Press the
Cololize, Trackball to cycle through available
maps and press Set to select.
12 Activate Gray Map Displays a map window adjacent to the image.
Move the trackball to select the map. The
image reflects the map as scrolled through the
selections. Press Set to select.
13 Compression
(Dynamic Range) Controls how echo intensities are converted to
shades of gray. Click Dynamic Range to
increase/decrease the value.
14 Adjust Angle Correct Estimates the flow velocity in a direction at an
angle to the Doppler vector by computing the
angle between the Doppler vector and the flow
to be measured.
15 Adjust Steer/Fine
Steer Slant the Color Flow linear image left or right to
get more information without moving probes.
Click Angle Steer to the left to slant the linear
image.
16 Move Baseline Adjusts the baseline to accommodate faster or
slower blood flows to eliminate aliasing.
17 Change PRF (Pulse
Repetition
Frequencies) - (Wall
Filter) Velocity scale determines pulse repetition
frequency. If the sample volume gate range
exceeds single gate PRF capability, the
system automatically switches to high PRF
mode. Multiple gates appear, and HPRF is
indicated on the display.
Change Scale - (Low
Vel Reject) Velocity scale determines pulse repetition
frequency. If the sample volume gate range
exceeds single gate PRF capability, the
system automatically switches to high PRF
mode. Multiple gates appear, and HPRF is
indicated on the display.
Table 4-8: PW Doppler Mode Soft Menu Key
Step Task Expected Result(s) Comments