GE LOGIQ 200, Руководство по контролю качества

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GE Medical Systems 3/4
Probe 4 (cont'd) :
Contrast Resolution. (OPTIONAL) QA Reference Manual Section 4-2 Step 6 & 7. Evaluate
the phantom contrast targets in the current scan. The point is not how any ONE of the targets look
but how well defined they are from each other, and from the background material.
Record the following information for five of the contrast targets, if available in the phantom. If they
are not available, indicate with N/A:
Object Number 1 2 3 4 5
Object Depth
Object Size
Object Contrast *
Object Detectability
Complete
Partial
Not Seen
Changed for Worse Y/N
Overall Probe Low Contarst Detectability
Change No Change (or First Test)
Notes for contrast resolution:
Object Depth - is from the skin line to the center of the object.
Object Size - is the overalldiameter of the object (all should be the same)
Object Contrast -
Use the Echo Level function by Freezing the image. Press the Measurement
key three (3) times to assess the gray scale contrast level.
A 3 cm square box appears in the image area.
Position the box in the center of the contrast object.
Press Set.
Record the resulting number as the Object Contrast in the chart above.
Object Detectability - Check one box according to your evaluation of the object.
Changed for Worse Y/N - Enter a Y (yes) or N (no).
Document any system setting changes if they are different than the original scan on page 6.
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NO NO NO NO NO