

Catalog excerpts

RTI CT Ion Chamber 30 cm General Specifications The RTI CT Ion Chamber 30 cm is a rugged, cylindrical pencil-shaped vented ionization chamber for CTDI measurements on wide CT beams. The chamber is intended for dosimetry on CT scanners in a phantom or free-in-air. CT dose index, CTDI, can be measured in accordance with IEC 61223-2-6. The CT ion chamber can be connected via RTI Chamber Adapter to the Piranha or to the Cobia. General Specifications Connector type Cable LEMO triaxial Active volume Active length Reliable Dosimetry The RTI CT Ion chamber 30 cm has the same outstanding characteristics as the 10 cm long RTI CT Ion chamber, with an energy linearity, within 0.5% in the range 70 - 150 kV for the IEC 61267 radiation qualities RQR 5 to 10, RQA 5 to 10, and RQT 8 to 10, and ISO N-150. With an effective length of 30 cm, dosimetry at wide beams becomes very accurate. Diameter 12 mm, 12.6 incl O-rings with RTI Chamber Adapter TYPICAL CORRECTION FACTORS a RQR(5,10) x RQT(8,9,10) o RQA(5,10) o ISO n-150 Air kerma rate 0.3 mGycm/s to 3 Gycm/s Specifications in this document may be changed without notice RTI Group Headquarters Flojelbergsgatan 8C SE-431 37 Molndal, SWEDEN
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