Terason t3000, Руководство пользователя

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Chapter 4 - Acquiring Images Freezing Images
Terason t3000 / Echo Ultrasound System User Guide 70
When you switch to Triplex mode, both the original 2D scan mode and PWD mode are
active. This depends on whether the options are set to simultaneous mode. See
Using
Spectral Doppler Image Controls on page 109 for more information.
Freezing Images
Live images are recorded by frame and temporarily stored on the computer. Depending on
the mode you select, you record a certain number of frames. For example, 2D mode allows
you to capture up to 10 seconds in a Cine loop.
Pulsed-Wave Doppler (including Triplex) and M-Mode scans only save a single frame for
the 2D image, and you cannot save loops for these scan modes.
When you freeze a real-time image during a scan, all movement is suspended in the Image
Display window. The frozen frame can be saved as a single image file or an image loop.
For M-Mode, PWD, CWD, and Triplex modes, the software saves the Time Series data
and a single 2D image.
You can unfreeze the frame and return to the live image display at any time. If you click
Live
without saving the image or image loop, you lose the temporarily-stored frames.
When performing an ultrasound scan, click to freeze the displayed image (or select
Image > Freeze
from the menubar). You can then use the Playback toolbar or the arrow
keys to move through the frames acquired during the scan (see Working with Image Loops
on page 70).
To start a new scan, you can:
• Click
• Select
Image > Live
• Press the space bar
You can use the spacebar to freeze images and start live scanning when Text mode is not
active. See
Typing Text on an Image on page 84 for information on Text mode.
Working with Image Loops
Reviewing an image loop is useful for focusing on images during short segments of a scan
session. When you freeze an image, you can use the buttons on the Playback toolbar or the
arrow keys to review an entire loop, frame by frame, to find a specific frame. You can also
use the Playback buttons when viewing a saved loop.
Playback Toolbar Buttons
Note: If you do not save the frozen image or loop, the frame data is lost when new data is
acquired. When you start live imaging, all previous frames are erased. Make sure
you save or print any needed images before you acquire new scan data.