Lunar DPX-IQ, Operator'S Manual, Page: 39 / 166

DPX-IQ Operator’s Manual Quality Assurance 3-1
Chapter 3 Contents
3.1 Quality Assurance Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
3.2 Spine Phantom Quality Assurance Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4
3.3 Monitor Precision Over Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8
Revised 1/99C
Chapter 3:Quality Assurance
3.1 Quality Assurance Tests
Complete a Quality Assurance (QA) test each morning before you scan a patient. The
procedure lasts 10–15 minutes and makes sure quality scans are acquired. Save all
QA printouts.
If a QA test fails, the message that follows is shown:
Unsuccessful Quality Assurance
Repeat procedure suggested
Complete the QA tests again. If a test fails two times, call the LUNAR Customer
Support Department or your LUNAR distributor. DO NOT try to scan a patient until a
successful QA test is complete.
3.1.1 Complete a QA Test
Use the standard to complete a QA test (the standard is a block of tissue-equivalent
material with three bone-simulating chambers of known bone mineral content).
1. At the Options screen, select
%
. The System Quality Assurance screen is shown.
2. Remove the pad from the scan table.
3. Position the calibration standard on the table (figure 3-1):
➊
Put the standard inside the rectangle on the scan table.
➋
Position the standard so the brass-colored part of the standard faces upward and
is toward the front of the scan table. DO NOT move the standard after the
test starts.
3
Quality Assurance