Performance Criteria And Corrective Action - Siemens MAMMOMAT Inspiration Quality Control Manual

8. Determine how many fibers, specks and masses can be identified.
a) Select object class (mass, speck group, fiber), see Figure 7.
b) For the selected object class start evaluation at the easiest visible sample.
c) Count number of visible samples of one class.
•
•
•
d) Note result in Test form Test 5.
5. Repeat steps 6 to 8 for target/filter combinations Mo/Rh and W/Rh.
6. Close examination.

Performance Criteria and Corrective Action

Figure 7 ACR (RMI 156) phantom
Number of objects that shall be detected:
Fibers ≥ 5
Specks ≥ 4
Masses ≥ 4
MAMMOMAT Inspiration
SPB7-330.640.01.01.02
A fiber is regarded as visible if it is found at correct orientation and
location and at least half of its length is recognized
A speck group is regarded as visible if it is found at correct
orientation and location and at least four of its specks are
recognized.
A mass is regarded as visible if it is found at correct location and its
circular appearance is recognized.
Test 5: Phantom Imaging Quality
35