Service manual

Chapter 8: Performance Testing 63
Color Power Doppler (CPD)
MMode Imaging
Tissue Harmonic Imaging
Test CPD 1 Connect any transducer.
2 Press the Color key. A Region of Interest (ROI) box is displayed on top of the grayscale image.
3 Press the Color softkey to switch to CPD. “CPD” should be annotated in the top left corner
of the display.
4Adjust the Depth control for minimum depth in the image.
5Adjust the Gain control so that color speckles just appear inside the ROI box.
6 Gently tap the face of the transducer and observe that the ROI box fills with color
information.
Test M Mode
Imaging
1 Attach a C60x transducer and acquire an image.
2 Press the MMode key for the M Mode sample line.
3 Position the M Mode sample line over the image using the touchpad.
4 Press the MMode key again to turn on M Mode.
5 Select the desired sweep speed from the on-screen menu (slow, med, or fast). The on-screen
menu will show the selected sweep speed.
6 Press the Freeze key to freeze the image. Save the image. Press the Freeze key again to
return to live imaging.
7 Press the 2D key to return to 2D imaging.
Test THI
Imaging
1 Attach the C60x transducer and acquire an image.
2 Set the depth to maximum and note the depth at which echo information is lost.
3 Press the THI key on the control panel so it displays THI on the display. Tissue Harmonic
Imaging in now active.
4 Observe a decrease in dot size and a significant loss in penetration due to the higher
frequency. Image resolution increases.
5 Press the Freeze key and then save the image. Press the Freeze key again to return to live
imaging.
6 Press the THI key again to turn off Tissue Harmonic Imaging.