Setting The Dose Rate For Zoom Format - Siemens SIREMOBIL Iso-C Service Instructions Manual
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Also See for SIREMOBIL Iso-C:
- Troubleshooting manual (148 pages) ,
- Maintenance instruction (46 pages) ,
- Service instructions manual (16 pages)
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Adjustments / Programs
•
Use the
line).
•
Apply fluoro briefly until the generator finishes regulating the automatic fluoro adjust-
ment.
•
Select KV STOP at the system operating console.
•
Switch on fluoro.
•
Set the dose rate with the [+kV] and [-kV] keys. (Dose rate * grid correction factor).
•
The resulting KV value should be between 70 to 80 kV. If necessary, change the prefiltra-
tion and set the dose rate again using keys [+kV] or [-kV]. Refer to the table.
•
Switch off fluoro.
•
Remove the dose measurement chamber from the I.I. input screen.
•
Switch on fluoro.
•
Press the [>0<] at the system operating console. This starts the automatic adjustment
procedure for the TV- iris collimator.
•
Wait until the message "done" appears in the "AUTO REGULATION" line.
•
The "BRIGHTNESS DEVIATION" value is shown in the "BRIGHTNESS DEVIATION"
line and should be 0 + 3 .
•
Switch off fluoro.
Setting the dose rate for zoom format
refer also to notice on previous page
•
KV-STOP remains selected.
•
Center the dose measurement chamber on the I.I. input screen and attach.
•
Select the I.I. zoom format (refer to "I.I. ZOOM STATUS"). The KV values remain the
same. The mA values, however, are automatically increased by a factor of 1.41.
•
Use the [mA+] and [mA-] keys to set the dose rate for the zoom format (Dose rate *grid
correction factor).
•
Press the [>0<] key at the system operating console. This starts the automatic adjust-
ment procedure for the TV-iris collimator.
•
Wait until the message "done" appears in the "AUTO REGULATION" line.
•
The "BRIGHTNESS DEVIATION" value is shown in the "BRIGHTNESS DEVIATION"
line and should be 0 + 3. Refer also to notice on previous page
•
Switch off fluoro.
•
Select the next level of dose rate (LOW / MID / HIGH) and repeat the dose rate setting for
the survey and zoom format for this level.
Siemens AG
Medical Solutions
key to select the dose rate (LOW / MID / HIGH, shown in the "DOSERATE"
SPR2-230.061.01
Rev. 13
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Page 7 of 30
12.04
CS PS 24
5 - 7
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SIREMOBIL Iso-C
System Manual
5
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