GE LOGIQ 200 Quality Assurance Manual page 68

GE MEDICAL SYSTEMS
REV 1
2-11 Functional Checks
1. Check all Front Panel Controls and System modes for proper operation. This includes Front Panel
Keyboards, Trackballs, Slide Pots, Potentiometers and Remote control of peripherals.
Take note of the position of any control that is not reset on power up, and return it to its original location.
NOTE: Many of the options listed below are configuration specific, and some are probe
specific.
alternatives are listed in parentheses. Others may have F/P controls assigned to them but
be inactive due to configuration. They are listed in the table only as a guideline to common
options available but may not be available on some types of systems.
Please refer to the applicable "FUNCTIONAL CHECKS" in the System Service/Operators manual for
detailed instructions. Check each of the modes/functions listed in the table to see if they function
normally. Consult the Service/Operators manual, if needed.
Indicate YES, NO or N/A for the functions in the table that are checked or not applicable.
2-12 Gray Scale Test
TThe gray scale test is not intended to set up the camera, printer or peripherals to the test pattern. Ensure
that the monitor and photography are set up to the customer specifications.
Look at the gray bar test pattern on the left side of the viewing monitor.
Count the number of distinct gray bar steps on the viewing monitor. Then count the number of steps
visualized in the Gray bar on the hard copy image. Circle the number of steps, if any, that are missing
on the hard copy. Circle the number of steps, if any, that are missing on the hard copy.
2-13 Performance Variation Tests Probe #1 & #2
The remainder of the QA Testing Procedure involves checking probe (transducer) performance. The tests
should be accomplished with a gray scale test phantom, if it is available.
Probes #1 and #2 should be the two most commonly used probes in typical studies at the facility being tested.
They should be of different scan formats if possible (i.e. sector, linear, convex).
Performance variation tests should be accomplished on probes #3 and above using the separate documents
provided.
2-13-1 Phantom
For future repeatability, indicate the approximate temperature of the phantom.
temperature is a big variable to take into consideration. Errors of 10% or more can be introduced
due to phantom temperature variations.
ULTRASOUND QUALITY ASSURANCE REFERENCE MANUAL
Some may be labeled differently depending on System type and some
2-4
2262684-100
Phantom