PinPoint 3D MR Ion Chamber 31025

Ready for use MR conditional chamber.

  • Particularly suited for End2End testing of gating algorithm
  • MR conditional (ASTM F2052-15 & ASTM F2213-17)
  • Optimized MR imaging feature
  • Carefree and safe use in an MR environment
  • Same specifications as T31022
  • Can be used with s.o. MRidian Viewray and ELEKTA Unity
  • Small-sized cylindrical ion chamber with vented sensitive volume of only 0.016 cm³
  • Small polarity effect
  • Minimal cable irradiation effect
  • Minimized directional response
  • Short ion collection time, low pre irradiation dose
  • Suitable for field sizes from 2 cm x 2 cm to 40 cm x 40 cm

The PinPoint 3D chamber is ideal for dose measurements in small fields as encountered e.g. in IORT, IMRT and stereotactic beams but can also be used for measurements in large fields. Designed for radial beam orientation, the small-sized chamber shows excellent 3D characteristics. Relative dose distributions can be measured with high spatial resolution in any direction.
The waterproof, fully guarded chamber can be used in air, solid state phantoms and in water.

Type No. 31025
Design: vented cylindrical ionization chamber, waterproof, fully guarded
Measured quantities: absorbed dose to water, air kerma, exposure
Nominal sensitive volume: 0.016 cm³, radius 1.45 mm,
length 2.9 mm
Reference point: on chamber axis, 2.4 mm from chamber tip
Nominal response: 400 pC/Gy
Chamber voltage: 300 V nominal, ± 500 V maximal
Radiation quality: 60Co ... 25 MV photons
Field size: (2 x 2) cm² ... (40 x 40) cm²
Connectors: TNC

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Related Downloads

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