Service manual

64 Chapter 8: Performance Testing
Pulsed Wave (PW) Doppler Imaging
Continuous Wave (CW) Doppler Imaging
Image Quality Verification Test/Livescan
• Products with replaced subassemblies, or products that have been otherwise disassembled, must undergo an
Image Quality Verification Test/Livescan.
• The Image Quality Verification Test/Livescan should be performed after successfully completing all applicable
performance tests listed prior in this chapter.
• The test is completed before returning the system to service.
• A certified sonographer must perform the test.
• The Livescan test performed is at the discretion of the Sonographer and will represent their acceptance of a
successful service event.
• Review all saved images and verify that the images are displayed properly.
Test PW
Doppler
Imaging
1 Attach the P21x transducer.
2 Press the Doppler key for the Doppler sample gate.
3 Press the Doppler key again for the Doppler spectral trace.
4 Place a large drop of ultrasound gel on the transducer lens.
5Adjust the Gain control as necessary and then gently tap the top of the gel and observe a
reflection on the spectral trace and the sound from the speakers.
6 Press the Freeze key and then save the image. Press the Freeze key again to return to live
imaging.
7 Press the 2D key to return to 2D imaging.
Test CW
Doppler
Imaging
1 Attach the P21x transducer.
2 Press the Patient key.
3 Select the Cardiac exam type.
4 Press the Done softkey.
5 Press the Doppler key for the Doppler sample gate.
6 Press the PW softkey to switch to CW Mode.
7 Press the Doppler key again for the Doppler spectral trace.
8 Place a large drop of ultrasound gel on the transducer lens.
9Adjust the Gain control as necessary and then gently tap the top of the gel and observe a
reflection on the spectral trace and the sound from the speakers.
10 Press the Freeze key and then save the image. Press the Freeze key again to return to live
imaging.
11 Press the 2D key to return to 2D imaging.