Terason t3000, Руководство пользователя

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Chapter 5 - Working With Scan Modes Scanning in Triplex Mode
Terason t3000 / Echo Ultrasound System User Guide 126
To change a setting, use the up and down arrow buttons at the top left corner of the
console. Each pair of up and down arrow buttons controls the setting in one of the four
boxes in the Scan Mode toolbar. The position of the button set corresponds to the position
of the box – the leftmost up and down buttons control the setting in the leftmost box, and
so on.
Special Trackball Responses to Mode
When Color mode, Directional Power Doppler mode, or Power Doppler mode is chosen,
the Terason software automatically selects the ROI, and moving the trackball controls the
ROI position. A click of the Select button above the trackball changes control to the ROI
size; rolling the trackball shrinks or expands the ROI. A second click of the Select button
changes to the Windows pointer. Another click of the Select button returns to controlling
the ROI position.
See Console Controls on page 35 for more information on using the console.
Scanning in Triplex Mode
Triplex scan mode combines Pulsed-Wave Doppler or Continuous Wave Doppler
scanning with Color Doppler, with Power Doppler, or with Directional Power Doppler
scanning. You can enable Triplex scanning using any of the following methods:
• Select a Doppler mode (CD, PD, or DPD), then select Pulsed-Wave Doppler or
Continuous Wave Doppler mode.
• Select a Doppler mode, then right-click in the scan window, and select
Set PWD Gate
from the shortcut menu.
• Select a Doppler mode, then type P (for PWD), or W (for CWD).
• Position the Windows pointer in the 2D image where you want to set the range gate,
then double-click.
To adjust image controls for Triplex scanning, first adjust the image controls for the 2D
scan mode, then go to the Color Doppler window, then double-click the PWD line and
Sample Volume location.
Some of the 2D image controls cannot be adjusted when running in Triplex, so you must
adjust the image controls (described in
Using 2D and I.Q. Controls on page 90) before you
initiate Triplex scanning.
The application adds the Time Series window for PWD to the 2D image.
Note: Continuous Wave Doppler mode is only available with the 4V2 transducer.
Note: In Triplex scanning only: the PRF value is tied to the setting on the 2D mode
(Color Doppler, Directional Power Doppler, or Power Doppler). If you change the
PRF value on one tab, the Terason software also changes the PRF value on the
other tab. This depends on whether you are scanning in simultaneous or non-
simultaneous mode, which is controlled by the Update button.