Image Optimization 5-41
z Set the position of the sampling line by moving the trackball left and right, and set
the ROI position by moving the trackball up and down.
z Set the ROI size by moving the trackball up and right.
z Press <Set> to switch between the cursor status between the ROI position
adjustment and ROI size adjustment.
îš„ Press <Update> on the control panel to switch between the real-time mode and
freeze mode.
Tips: In Color M mode, ECG function is supported.
5.11 3D/4D
Tips:
z You can select 4D optional module. 4D module includes 4D and Static 3D
functions. You can also select Smart3D optional module only.
z If Smart3D optional module is selected, to enter the Smart3D imaging, you should
select [Smart3D] instead of [3D/4D] as described in this Operator’s Manual.
NOTE: 3D/4D imaging is largely environment-dependent, so the images obtained are
provided for reference only, not for confirming a diagnosis. Please compare the
images with that of other machines, or make diagnosis using none-ultrasound
methods.
5.11.1 Note before Use
5.11.1.1 3D/4D Image Quality Conditions
NOTE: In accordance with the ALARA (As Low As Reasonably Achievable) principle,
please try to shorten the sweeping time after a good 3D imaging is obtained.
The quality of images rendered in the 3D/4D imaging is closely related to the fetal
condition, angle of a B tangent plane and scanning technique (Smart3D). The following
description uses the fetal face imaging as an example, the other parts imaging are as the
same.
îš„ Fetal Condition
z Gestational age
Fetuses of 24~30 weeks old are the most appropriate for 3D imaging.
z Fetal Body Posture
Recommended: Cephalic face up (figure a) or face aside (figure b).
NOT recommended: Cephalic face down (figure c).
a
b c
z
Amniotic fluid(AF) isolation
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