RTI -Model CT -X-ray Field Ion Chamber (Ionization)
The RTI CT Ion (Ionization) Chamber is for use with the Piranha, Mako, Cobia FLEX R/F, and Cobia SENSE meters. The RTI CT Ion Chambers – 10 cm and 30 cm – are intended for CTDI and dose length product measurements on CT scanners in a phantom or free-in-air.
Both chambers can be connected via the RTI Chamber Adapter to the Piranha or to the Cobia. The 10 cm chamber can also fit into standard phantoms used for CTDI measurements. They fulfill applicable parts of the IEC 61674 standard for diagnostic dosemeters and are thereby compatible with IEC 61223-2-6 and 66601-2-44 for applicable CT dosimetry.
The chambers come with RQT9, 120 kV, and W/Al + 0.25 mm Cu as standard calibration. Please specify on the order if you prefer another calibration.
Ranges with Piranha, Mako & Cobia FLEX (RTI Chamber Adapter required)
- Air kerma rate: 0.3 mGycm/s to 3 Gycm/s
- Inaccuracy: ±5 % or ±0.03 mGycm/s
- Connector type: LEMO triaxial
- Cable: 2 m, low noise triaxial
- Active volume: 16 cm³
- Active length: 300 mm
- Diameter: 12 mm, 12.6 incl O-rings
- Typical leakage: ±20 fA
- Radiation quality: 70 - 150 kV
- Sensitivity: 30 mGycm/nC
- Energy dependence: ±1 %