6 Image Acquisition
Operator’s Manual 6 - 25
– MAP (Mean Artery Pressure) and CVP (Central Venous Pressure) can be inputed
manually to obtain LVOT SVR and Eadyn results.
If necessary, adjust the PW sampling line and sampling volume:
Adjust the PW sampling line position and the PW sampling volume.
After adjustment, the LVOT spectrum tracing and calculation results display in real time.
6. Tap the [Freeze] button to freeze the image, and check the Smart VTI Plus calculation results.
If necessary, you can edit the LOVT spectrum manually:
a. Select [Edit VTI] to activate the cursor.
b. Move the cursor to the spectrum tracing line.
c. Move the cursor to trace a line.
After tracing, the calculation results display in real time.
7. Select [Save VTI] to save the Smart VTI Plus calculation results of the current cardiac cycle to
the report.
8. Select [Graph] to check the quantitative index trend curve.
VTI, SV (Stroke Volume), CO, SVR and Eadyn have different trend curves and are
differentiated by colors. A maximum of 6 sets of Smart VTI results can be saved and
displayed.
Tap the trend curve area of quantitative index to zoom in the trend curve of quantitative index
and display more groups of trend curves of VTI, SV, CO, SVR and Eadyn.
9. Tap [Report], and select [Volume Management] in Report Type to view the report.
For other detailed operations on the report screen, see the Advanced Manual.
6.13 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] > [Smart IVC] 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.
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