Image Optimization 5-61
For gestation age of more than 20-30 weeks, the acquisition time should be about 15s, and the
angle should be about 30°.
Adjust the size and position of the sample box to contain the interested region within the sample
box.
However, the box should be small enough to contain only the heart, not the whole thorax.
NOTE:
In order to archive a good result, try to adjust the volume box and the sweep angle to be
as small as possible. The longer the acquisition time, the better the spatial resolution will
be.
5. Place the sample box over the region of interest.
6. Press <Update> to begin image acquisition.
Keep the probe still, the volume acquisition proceeds automatically and the acquired images are
displayed.
To avoid external interference to the image, make sure that there is minimal movement of the
mother.
In case of motion of the mother, the fetus or probe position change, cancel the current
acquisition and begin for a new acquisition.
After the calculation, the estimated heart rate is shown on the screen.
7. Judge if the shown estimated heart rate is reasonable. If the result is not reasonable, touch [Reject
All] to perform the acquisition again. Tap [Accept HR] to accept the result and go to image review, or
tap [Reject HR] to reject the HR but save the volume data.
Operations in review mode are the same as that of 4D cine review mode; please refer to the details in 4D
chapter.
Tips: after STIC acquisition, press <Cine> to switch between cine auto play mode and manual mode.
5.11.6.2 Operation Controls
Acquiring Time
The time required for a whole acquisition.
Range: 7.5
～
17.5s.
Angle
The range from acquisition beginning to acquisition end.
Range: 10
～
85°.
Other control operations are same with these in 3D/4D mode.
5.11.6.3 Color STIC 3D
The system also supports color STIC 3D flow image function.
5.11.7 4D
4D provides continuous, high volume acquisition of 3D images.
The probe performs the scan and reders the image automatically without the move of the probe.
Image acquisition operations of 4D are basically similar with that of Static 3D, the only difference is: in
static 3D mode, only a single frame 3D image captured, while in 4D mode, continuous, high volume
acquisition of 3D images are provided.
5.11.7.1 4D Procedures
To perform 4D imaging:
