GE Optima XR200amx, Руководство по установке

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GE H
EALTHCARE
O
PTIMA
XR200
AMX
/XR220
AMX
D
IRECTION
5336113-1EN, R
EVISION
10 I
NSTALLATION
M
ANUAL
Chapter 5 Calibration Page 117
a. The WC tag is 0028x1050 and the WW tag is 0028x1051
b. The values are WC=8192\8192\8192 and WW=16383\12288\24575
8. Verify VOI-LUT tags as follows:
a.
Search the DICOM header for tag 0028x3010VOILUTSequence.
b. No VOILUTSequence tag should be present. If a VOILUTSequence is present, the image
was not sent correctly. Resend the image as Burn-on-Send.
9. Record the results in Table 5-4 .
5.4.3.3 Verifying WC and WW values
No-Burn Mode (PACS Test Image #1)
The DICOM header of each PACS Test Image is always sent with WC/WW=5226/2654. The values
displayed on the PACS may appear differently. This is acceptable according to DICOM standards.
The values can show up as 8192/16384, 5226/2654, or something else. The most common and
preferred implementation is to show values of 8192/16384 on the PACS.
1. Open PACS test image #1.
2. Verify that the WC/WW values are 8192/16384.
If the values do not appear as 8192/16384, check that the VOI-LUT is enabled on the PACS.
The VOI-LUT often can be enabled with a drop-down list on the image or through hanging
protocols.
Note : This does not indicate that the PACS does not support VOI-LUTs. Support for VOI-LUTs
is strictly determined by the visual appearance of PACS test images #1 and #6.
3. Record the results in Table 5-4 (see 5.4.4 PACS image comparison results on page 118 ).
Burn-on-Send Mode (PACS Test Image #6)
1. Open PACS test image #6.
2. Verify that the WC/WW values are 8192/16384.
If the values do not appear as 8192/16384, check that the VOI-LUT is enabled on the PACS.
The VOI-LUT often can be enabled with a drop-down list on the image or through hanging
protocols.
3. Record the results in Table 5-4 (see 5.4.4 PACS image comparison results on page 118 ).
5.4.3.4 Checking for image saturation
1. Open PACS test image #1.
2. Check that the clinical chest area appears with no saturation in the lung or abdomen region.
3. Record the results in Table 5-4 .
5.4.3.5 Testing reduced dynamic range with Burn-on-Send
The Burn-on-Send configuration causes a reduced dynamic range in the image if you change the
window level of the image on the PACS.
1. Open PACS test image #6.
2. Change the window level on the PACS to attempt to see the five squares in all twelve bands.
Start by changing the WC value to
0 and the WW value to 500 (the appropriate values may
vary among different PACS workstations).