Fluke Biomedical 18-222 - Manual (Page 15)

2-7
Location: Week/Month
Mammo Unit: QC Phantom No.
Processor Type:
Quality Assurance Record
Mammography
Processor Cycle: 90 sec/2.5 min/3.0 min
Baseline Day/WK-1 2 3 4 5 Remarks
Film Type
Record film type and record
serial number of film box in use.
kVp (with photomtimer)
Record kVp used for phantom
test measurement. Use kVp
normally used for an average
density 4.5 cm breast.
Processor Temperature °F
Record processor temp at 9:00
A.M. each day.
Processor Speed
(Sensitometry – Step 10)
Keep a box of film set aside -
sensitize and process. Read step
10 with optical densitometer –
record value.
Processor Contrast
(Step 9 – 11)
Again, read steps 9 – 11 on the
sensitized film. Subtract step 9
value from step 11. Record
contrast.
Phantom Contrast
(Step 1 – 5)
On the phantom test image,
read stepwedge step 1 and
step 5. Subtract values. Record
contrast.
Phantom
Central Background Density
On phantom test image, read
background density in the
middle of phantom with optical
densitometer. Record value.
Phantom
Calcifications
On phantom test image, count
the number of micro
calcification groupings visible.
Record value.
Phantom
Low Contrast Masses
On the phantom test image,
count the number of low
contrast masses visible.
Records value.
Phantom
Line Pair Visible
On phantom test image, view
line pair test target with
microscope. Record the
number of line pairs/mm
visible.
Dose
(Mean glandular dose for a
4.5 cm 50% Glandular Breast)
Calculate the exposure monthly
with ion chamber and convert
to mean glandular dose or,
contact CIRS for QC kit.
For daily readings, use 1 sheet/week
For weekly readings, use 1 sheet/month
Figure 2-3. Quality Assurance Record