Performing The Afssaps / Euref Calibration Check - AGFA DRYSTAR 5302 Technical Documentation Manual

DD+DIS150.05E
2.5.6

Performing the Afssaps / EUREF Calibration Check

(1) Leave the service command session.
(2) Connect the printer network cable to the network outlet at the wall.
(3) Consult the "connectivity release document" for the modality connection to
DRYSTAR 5302 for the proper modality configuration to print the "TG18-PQC
modified 4" test image.
(4) Print the "TG18-PQC modified 4" test image from the modality.
(5) Measure the 18 density values and enter them in the Afssaps / EUREF
Calibration Check Excel sheet. See Figure 17.
EUREF/AFSSAPS GSDF check for Genrad printers
Laser:
Measured luminance
testpattern
TG18-LN12-# p-value
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18
Result contrast response printer
(6) Check column "Deviation compared to DICOM (%)": All values have to be < 10%:
- If all values are < 10%, the procedure is finished.
- If one (or more) value(s) are ≥ 10 %, proceed with next section.
(7) Repeat this step for the other film tray.
The controlled version of this document resides on MedNet. Any printed copy of this document is uncontrolled.
Edition 1, Revision 1
05-2009
deviation compared
to DICOM (%)
Step 3: Check, that deviation is < 10% for all values. If 1 (or more) value > = 10% go to Step 4
values
Luminance JND deviation compared
L j(L) dL/L to DICOM (%)
0 11,98582 233,211
240 17,90569 272,089 0,396 2,3
480 25,06399 307,434 0,333 6,5
720 34,43093 343,017 0,315 5,6
960 47,83903 382,004 0,326 3,3
1200 67,27169 424,518 0,338 12,0
1440 90,89841 463,665 0,299 3,0
1680 121,6709 502,866 0,290 3,0
1920 157,2109 538,238 0,255 6,8
2160 199,6444 571,900 0,238 11,1
2400 260 609,777 0,263 0,0
2640 339,5642 648,671 0,265 2,7
2880 454,5699 691,754 0,290 13,5
3120 582,7169 728,841 0,247 2,2
3360 731,0079 762,970 0,226 9,9
3600 938,8381 800,887 0,249 0,1
3840 1206,575 839,125 0,250 0,9
4080 1551,488 877,616 0,250 1,5
1,000
left monitor
DICOM 3.14
+/- 10%
0,100
0 1000 2000 3000 4000 5000
p-values
DOCUMENT CONTROL NOTE:
DRYSTAR 5302
Adjustments and Calibrations
Step 2: Adjust Illumination and refected light used for printing the ima
"Illumination cd/m
2500
"reflected (ambient) light"
10
DICOM 3.14 standard
testpattern Luminance JND
TG18-LN12 p-value L j(L) dL/L
1 0 233,211
11,99
2 240 17,74 271,117 0,387
3 480 25,43 309,023 0,356
4 720 35,61 346,929 0,333
5 960 48,95 384,835 0,316
6 1200 66,33 422,741 0,301
7 1440 88,83 460,648 0,290
8 1680 117,87 498,554 0,281
9 1920 155,23 536,460 0,274
10 2160 203,16 574,366 0,268
11 2400 264,57 612,272 0,263
12 2640 343,13 650,179 0,259
13 2880 443,52 688,085 0,255
14 3120 571,73 725,991 0,253
15 3360 735,41 763,897 0,250
16 3600 944,32 801,803 0,249
17 3840 1210,97 839,709 0,247
18 4080 877,616 0,247
1551,49
lineair relation between p-value and JN
a: 0,157942
b: 233,2106
Figure 17
Type 5366/100
Repair and Service
Step 1: Enter the measured values here e
2"
dL/L dL/L
+15% -15% Step # on TG18 image Measured OD LuminanceStep # in CFC calibration screen on printer
1 3,1 11,98582
0,445 0,329 2 2,5 17,905694
0,410 0,303 3 2,22 25,06399
0,383 0,283 4 2,01 34,430931
0,363 0,268 5 1,82 47,839031
0,347 0,256 6 1,64 67,271691
0,334 0,247 7 1,49 90,898414
0,323 0,239 8 1,35 121,6709
0,315 0,233 9 1,23 157,21091
0,308 0,227 10 1,12 199,64439
0,302 0,223 11 1 260
0,297 0,220 12 0,88 339,56418
0,294 0,217 13 0,75 454,56985
0,290 0,215 14 0,64 582,71691
0,288 0,213 15 0,54 731,00788
0,286 0,211 16 0,43 938,83807
0,285 0,210 17 0,32 1206,5752
0,284 0,210 18 0,21 1551,4875
Step 4: Enter these values in CFC* screen on print
Only required if deviation >= 10% (see step 2)
* CFC = Compliance Film Calibration
Chapter 3.6 / 27
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