Terason t3000 / Echo Ultrasound System User Guide
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5 Working With Scan Modes
Scan Modes Overview
When you select a scan mode, the Image Control bar shows as many as four tabs. The
2D
and
I.Q.
tabs associated with 2D imaging are always displayed. All other modes available
in the Terason Ultrasound System software include the 2D functions, and also include an
additional tab or tabs with image controls for the selected scan mode.
In general, follow these guidelines to choose which scan mode to use for an exam:
• Select
to view a two-dimensional display of the anatomy. 2D controls adjust
the size, depth, focus, overall image gain, brightness, and exam type. See
• Select
to evaluate motion over time, such as viewing motion
patterns of the heart. See
• Select
(PWD) mode when you want obtain frequency or velocity
information from a specific point along a ultrasound cursor. See
• Select
(CWD) mode when aliasing is a problem, and when
depth-specific information is not important. See
Using Spectral Doppler Image Controls
• Select
(CD) when you must view the mean velocity within an assigned
region of interest. See
Using Color and Power Doppler Image Controls
• Select
(Pwr) to view the density of blood, but not the velocity. Power
Doppler is more sensitive to low flow than either color Doppler or Directional Power
Doppler, and is often used to evaluate perfusion and vessel patency See
and Power Doppler Image Controls
• Select
(DPD) to combine the density information provided
by Power Doppler with the directional information of Color Doppler. See
and Power Doppler Image Controls
• Use
to combine Pulsed-Wave Doppler or Continuous Wave Doppler scanning
with Color Doppler, with Power Doppler, or with Directional Power Doppler scanning.
See
You can adjust image controls for these tabs, depending on the selected scanning mode:
• 2D tab
• IQ tab
• M-Mode tab
• PWD tab
• CWD tab
• CD, DirPwr, or Pwr tabs
