Concluding Steps; Checking The Dose Rate In Automatic Mode - Siemens SIREMOBIL Iso-C Service Instructions Manual

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Concluding steps

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After setting all dose rates for the survey and zoom formats, click "Stop Update" and wait
until "CAL" disappears from the 7 segment indicator to the right on the operating con-
sole. The TV- iris collimator values are stored to the EE-PROM of the host.
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Press ESC at the service PC to return to the main menu.
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Select the "Data, Backup..." menu.
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Click "Parameter" in the backup window.
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Then click "Backup" .
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Enter" dose rate set" under "Remarks for Parameter".
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Then click "OK" . The parameters are stored to disk.
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You can now exit from the service program.

Checking the dose rate in automatic mode

NOTE
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Center and reattach the dose measurement chamber to the I.I. input screen. .
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Set the kV-mA curve HC1 (3mA plateau curve). If necessary, temporarily program the
HC1 curve.
•
During automatic mode (kV STOP is off), check the dose rate for dose rate levels
LOW / MID / HIGH for the survey and zoom format.Take into account the correction fac-
tors for the grid and the dose measurement chamber. If necessary, temporarily change
the dose rate levels and kV-mA curves.
Tolerance margin for the dose rates: + 15%.
•
Set the kV-mA curve HC2 (5 mA plateau curve). If necessary, temporarily program the
HC2 curve.
•
During automatic mode (kV STOP is off), check the dose rate for dose rate levels
LOW / MID / HIGH for the survey and zoom format.Take into account the correction fac-
tors for the grid and the dose measurement chamber. If necessary, temporarily change
the dose rate levels and kV-mA curves.
Tolerance margin for the dose rates: + 15%.
SIREMOBIL Iso-C
System Manual
Checking the dose rate in zoom format with a dose rate measure-
ment chamber that is not completely irradiated may lead to incor-
rect measurements.
SPR2-230.061.01
Rev. 13
Adjustments / Programs
Page 8 of 30
12.04 CS PS 24
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Siemens AG
Medical Solutions