SonoSite C1.9 PLUS, Service Manual

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68 C1.9 PLUS Ultrasound System Service Manual
8.4.4 Penetration
To test penetration:
1. Adjust the system controls to obtain a clear image that shows the limits of echo
penetration as shown in Table 8.2.
2. Measure from the center of the skinline to the deepest vertical position—where
the scatter echoes start to break up and tissue definition is lost.
8.5 Additional Performance Tests
8.5.1 CPD
To test CPD:
Note: Use the RMI 425 Doppler Phantom or the RMI 1425A Doppler Phantom.
1. Connect any transducer and set up the system for CPD mode.
2.
Acquire the image.
3. Press and release the 8 key for CPD mode. A Region of Interest (ROI) box is
displayed on top of the grayscale image. (Press the 0 key to return to 2D
imaging.)
To move the CPD image:
• Use the trackball to move the CPD ROI. While you are moving the CPD
ROI, you will see an outline of the new position moving on the display. When
you stop moving, the new position will display the CPD ROI. (The size of the
CPD ROI is fixed. There is no control to change it.)
To adjust CPD gain:
• Turn gain clockwise to increase the amount of CPD gain. (While in CPD
imaging, near and far affect only the 2D image; they do not affect the CPD
image.)
• Turn gain counterclockwise to decrease the amount of CPD gain.
4.
Image the vessel using a Doppler phantom. Verify that as the gain controls
increase and decrease, Doppler echo intensity increases and decreases to
correspond. Verify that no flow exists outside the vessel.
5. Save a CPD image by pressing Freeze and then Save .
Table 8.2 Imaging Performance
IMAGING
PERFORMANCE
C60 ICT ICT HF C15 L38 C11
2D Penetration 11.5 cm 6.0 cm 5.0 cm 19.0 cm 6.0 cm 5.0 cm