Mindray Imagyn 7, Operator'S Manual

Page: 255 / 492

Operator’s Manual 9 - 1
9
Contrast Imaging
The contrast imaging is used in conjunction with ultrasound contrast agents to enhance imaging of
blood flow and microcirculation. Injected contrast agents re-emit incident acoustic energy at a
harmonic frequency much more efficient than the surrounding tissue. Blood containing the contrast
agent stands out brightly against a dark background of normal tissue.
CAUTION
• Set MI index by instructions in the contrast agent accompanied manual.
• Read contrast agent accompanied manual carefully before using contrast
function.
NOTE:
• Make sure to finish parameter setting before injecting the agent into the patient to avoid
affecting image consistency. This is because the acting time of the agent is limited.
• The applied contrast agency should be compliant with the relevant local regulations.
9.1 Basic Procedures for Contrast Imaging
Perform the following procedure:
1.
Select an appropriate probe, and perform 2D imaging to obtain the target image, and then fix
the probe.
2. Tap [Contrast] or press <Contrast> to enter the contrast imaging mode.
3. Adjust the acoustic power experientially to obtain a good image.
Tap [Dual Live] to activate the dual live function. Observe the tissue image to find the target
view.
4. Inject the contrast agent, and tap [Timer1] to start the contrast timing. When the timer begins to
work, the time will be displayed on the screen.
5. Observe the image, tap [Pro Capture] and [Retro Capture] or the user-defined key to save the
images. Press <Freeze> to enter cine review status.
Perform several live captures if there are more than one interested sections.
6. At the end of a contrast imaging, tap [Timer1] to exit the timing function. Perform steps 3-5 if
necessary.
For every single contrast imaging procedure, use [Timer2] for timing.
If necessary, activate destruction function by tapping [Destruct] at “ON” to destruct the micro-
bubbles left by the last contrast imaging; or to observe the reinfusion effect in a continuous
agent injecting process.
7. Exit contrast imaging.
Press <B> button to return to B mode.