FujiFilm Sonosite PX System, Service Manual

Page: 87 / 110

Chapter 8: Performance Testing 79
Color Power Doppler (CPD)
M Mode Imaging
Tissue Harmonic Imaging
Test CPD 1 Connect any transducer.
2 Press the Color button. A Region of Interest (ROI) box is displayed on top of the
grayscale image.
3 Press the Color type softkey to switch to CPD. “CPD” should be annotated in the
lower right corner of the display.
4 Adjust the Depth control for minimum depth in the image.
5 Adjust 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 C5-1 transducer and acquire an image.
2 Press the M Mode button for the M Mode sample line.
3 Position the M Mode sample line over the image using the Touch Pad.
4 Press the M Mode button 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. Slide the Freeze Unlock
to return to live imaging.
7 Press the 2D key to return to 2D imaging.
Test THI
Imaging 1 Attach the C5-1 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 on button on the User Interface more controls section 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 button and then save the image. Press the Freeze button to return
to live imaging.
6 Press the THI off button to turn off Tissue Harmonic Imaging.