Ion Chamber Target Dosimetry Kit
 • Single Film Target Dosimetry Insert
 • MRI/CT/PET Spherical Target 
  Rectangular Insert
 • MRI/CT/PET Spatial 3D Distortion Insert
 • MRI/CT/PET Organic Target  
  Rectangular Inserts
 • Electron Density Cube with  
  Removable Vial
 • Adapter for Model 038 STEEV and Leksell®  
  Frame G
 • Variable Position Ion Chamber  
  Dosimetry Kit
 • Film Stack Dosimetry Kit
 • TLD Dosimetry Kit
 • Adapter for Model 038 STEEV and Leksell®   
  Frame G
RADIATION ALIGNMENT QA
STEEV’s radiation alignment QA inserts allow users to assess optical and geometric 
isocenter alignment to verify geometric accuracy.
 • Winston Lutz Cube with 5mm diameter 
  Centroid and Off-Center Target
 • Adapter for Model 038 STEEV and Leksell®  
  Frame GDuring the commissioning process, SRS systems require QA testing of the entire treatment 
chain to include positioning and fixation, diagnostic imaging in CT, MRI and/or PET, treatment 
planning, and dose delivery verification. STEEV’s uniquely anthropomorphic design allows for 
easy transition throughout this process. Users can easily change between dosimetry, image 
fusion, TPS deformable image registration, and electron density inserts while STEEV remains 
in position. A series of inserts with identical 30 mm diameter spherical targets allow for target 
consistency during dose measurements and MRI/CT/PET image-fusion making them ideal for 
end-to-end testing. Geometric and organic target inserts provide means for comprehensive im
age QA, geometric machine QA and TPS QA for increased confidence in system performance.
SRS MACHINE QA
DOSE VERIFICATION
To evaluate dose, STEEV accommodates inserts without targets so that users can validate 
dose to unique target volumes. Inserts facilitate dosimeter placement at multiple locations within 
the brain, other critical structures such as the spine and within challenging high-dose gradient 
regions in the neck. Inserts are compatible with a wide range of dosimeters so users can imple
ment dose QA protocol using dosimeters they already own.