OCTAVIUS Detector 1500

Advanced IMRT / VMAT QA.

The OCTAVIUS Detector 1500 is a new concept of an ionization chamber matrix in a plane for IMRT verification and quality control in radiation therapy. Utilizing ionization chambers avoids radiation defects, the major drawback of solid state detectors. The vented plane-parallel ion chambers are 4.4 mm x 4.4 mm x 3 mm in size, and the center-to-center spacing is 7.1 mm. In total there are located 1405 ionization chambers in a chessboard matrix, providing a maximum field size of 27 cm x 27 cm. The square chamber design offers unique 50 % field coverage. The OCTAVIUS Detector 1500 can be used for IMRT plan verification, Linac QA (with optional MultiCheck software) and online LINAC adjustment (with BeamAdjust software).The OCTAVIUS Detector 1500 can be mounted to the gantry using the Universal Gantry Mount, used together with the octogonal OCTAVIUS phantom or with the OCTAVIUS rotation unit for advanced 3D dosimetry.

Key Features

  • Provides a matrix of 1405 detectors resulting in an effective measuring field of 27 cm x 27 cm
  • Diagonal detector spacing of 7.1 mm
  • Best available field coverage of 50 %
  • Avoids detector ageing effects by utilizing ionization chambers
  • Gold Standard ionization chamber technology
  • Absolute dose calibration at 60Co
  • One detector – multiple applications
  • Suitable for FFF LINACs

Verification of very long radiation fields with VeriSoft

The OCTAVIUS Detector 1500 is particularly suitable for complex treatment plans with very long radiation fields.

Increase your verification length with the VeriSoft "Compose" feature - compose two VeriSoft measurements and thus increase the length of your OCTAVIUS detector array from 26 cm to 48 cm.

Full coverage of clinically relevant regions

The measurement principle of OCTAVIUS Detector together with OCTAVIUS 4D is the only 4D dose verification system that allows dose to be measured not only at isolated points but throughout the entire phantom volume. This ensures full coverage of all clinically relevant regions such as target volumes and organs at risk.

Detector type: Plane-parallel vented ionization chambers    
Number of detectors: 1405    
Detector size: 4.4 mm x 4.4 mm x 3 mm (0.06 cm³)    
Detector spacing: 7.1 mm center-to-center    
Max. field size: 27 x 27 cm²    
Max. measurement points: 2916 (four merged measurements)    
Reproducibility: ≤± 0.5%    
Dead time: zero    
Repetition rate: 100 ms    
Measured quantities: absorbed dose to water (Gy), absorbed dose rate to water (Gy/min)    
Resolution: Dose: 0.1 mGy, Dose rate: 0.1 mGy/min    
Measurement range: 0.25 ... 800 Gy/min    
Reference point: 7.5 mm below the surface of the array    
Housing material: PS, GRP (frame)    
Dimensions: 467mm x 300mm x 22mm (H x W x D)    
Weight: 6 kg    
Power supply: (100 ... 240) VAC; (50 ... 60) Hz    
PC connection: Ethernet    

Related Downloads

OCTAVIUS 4D Verification of long radiation fields ( 801 KB )
Radiation Medicine Catalog ( 9 MB )
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