6 - 18 Operator’s Manual
6 Image Acquisition
9. Select [Graph] to check the quantitative index trend curve.
VTI, SV, and CO have different trend curves and are differentiated by colors. A maximum of 6
sets of Smart VTI results can be saved and displayed.
6.12 Smart IVC
Smart IVC is used to automatically measure the IVC inner diameter and calculate the change rate in
the B mode image. Measure the IVC (Inferior Vena Cava) in real time, and the system
automatically tracks and measures the changes of IVC inner diameter. It can be used to assist in
treatments, such as volume estimation and fluid infusion.
Smart IVC supports calculation in both real time and freeze modes:
• Enable Smart IVC in real time. The calculation starts from the current frame and ends after the
image is frozen.
• Enable Smart IVC in freeze mode or from the cine file. The calculation starts from the current
frame and ends at the last frame. If the cine length is no longer than 10 seconds, it is allowed to
calculate in retrospective from the current frame after the cine length reaches 10 seconds.
Perform the following procedure:
1. Select an appropriate probe and exam mode.
2. Move the probe to gain an appropriate IVC long axis image.
3. Tap [Smart IVC] on the right side of the operating panel to enter Smart IVC mode and start
calculation.
a. Select a breath type: Spontaneous Breath or Mechanical Ventilation.
b. Select [Chg Resp time] > [Resp Rate] to set a respiratory time.
The system measures the IVC inner diameter of the image in every frame, calculates the
maximum and minimum IVC diameters, and draws a quantitative index change curve in real
time.
4. If necessary, you can adjust the IVC sampling line manually:
– Position Adjustment: tap and hold the middle point of the IVC sampling to drag the
sampling line.
– Angle Adjustment: tap and hold any end point of the IVC sampling and drag to adjust the
angle of the sampling line.
5. Tap [Freeze] to freeze the image and finish calculating IVC.
The calculation results and quantitative trend curve are displayed on the screen. Select the
diagnostic Information item to add diagnostic information to the image.
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