STEEV - Stereotactic End-To-End Verification Phantom Patient - CIRS 038
For Comprehensive Testing of Stereotactic Radiosurgery Systems

SRS commissioning and treatment verification

Stereotactic Radiosurgery (SRS) necessitates a high degree of accuracy in target localization and dose delivery. Small errors can result in significant under treatment of portions of the tumor volume and overdose of nearby normal tissues. The CIRS Stereotactic End-to-End Verification Phantom "Steev" provides a means to check every step the patient will undergo in the treatment process-- from diagnostic imaging with CT, MR and PET, to treatment plan verification.

Accurate patient simulation

Steev's anthropomorphic exterior allows for use of multiple positioning and fixation devises as used in clinical application. Internal details such as cortical and trabecular bone, brain, spinal cord, teeth, sinuses and trachea provide the most realistic clinical simulation to evaluate the challenging effects of complex intra-cranial and extra-cranial anatomies. Geometric and organic target inserts provide means for comprehensive image QA, geometric machine QA and TPS QA for increased confidence in system performance.

Dose measurements at isocenter and off isocenter positions

Steev accommodates a variety of interchangeable tissue equivalent inserts suitable for small field dosimetry including: micro-point and pin-point ion chambers, film, MOSFET, TLD, OSL (nanoDot™*) and 3D gel. When used in concert with the various imaging inserts, Steev provides the most comprehensive end-to-end testing and QA solution for SRS systems.

Features: * nanoDot™ Trademark for Landauer, Inc., Glenwood, IL 60425



E2E SRS/SRT Logo

Axial T1 and T2 images of 50 cc Organic Target Insert aligned to external MR/CT fiducials
Axial T1 and T2 images of 50 cc Organic Target Insert aligned to external MR/CT fiducials
CT image of Spatial 3D Distortion Rectangular Insert
CT image of Spatial 3D Distortion Rectangular Insert

Specifications
Model 038 Includes
  • (1) Stereotactic Radiosurgery Head Phantom
  • (1) 605-SS1 Brain Equivalent Spacer (63.4 x 63.4 x 10 mm)
  • (1) 605-SS2 Brain Equivalent Spacer (63.4 x 63.4 x 20 mm)
  • (1) 605-SS4 Brain Equivalent Spacer (63.4 x 63.4 x 63.4 mm)
  • (1) Solid Ø 12.5 mm (posterior chamber access plug
  • (1) Solid Ø 12.5 mm anterior chamber access plug with MR/CT fiducial
  • (1) 038-15 MRI/CT ISO Center rectangular insert
  • (1) Neck Alignment Plate
  • (1) Rubber Clamp
  • (1) Foam-lined Case
  • (1) User Guide
  • 48 Month Warranty
Model 038 Optional Accessories
038-01 Shoulders (additional 100 mm)
038-02 ABS vacuum formed cradle
038-03-CvXX-XX Ion Chamber Dosimetry Kit:
  • (1) 63.5 mm Cube with Ø 30 mm Spherical Target Cavity
  • (2) Ø12.7 mm Sleeves for adapting Ion cavity
  • (1) Solid plug with Ø 2.5 mm aluminum oxide BB in ISO center
  • (1) Solid plug
038-04-CvXX-XX Variable Ion Chamber Position Dosimetry Kit:
  • (1) 63.5 mm Cube with cavity thru hole
  • (2) Ø 12.5 mm Sleeves for adapting Ion cavity
  • (1) Solid cavity plug with Ø 2.5 mm aluminum oxide BB in ISO center
  • (1) Solid cavity plug
  • (1) Spacer plug set to accommodate cavity at different positions
038-05 Film Cube for Single Film Dosimetry with Ø 30 mm target
038-06 TLD Dosimetry Cube
038-08 Multiple-OSL Dosimetry Target Insert
038-09 Electron Density Cube with Real Water Electron Density plug
(Water Equivalent Material Surrounding Removable Ø 1" Vial)
038-10 Winston Lutz Cube with Centroid & Offset Ø 5 mm targets
038-11 MRI/CT/PET Target Cube with Ø 30 mm target
038-12 MRI/CT/PET Target Cube with 25 cc Organic target
038-13 MRI/CT/PET Target Cube with 12.5 cc Organic target
N/A MR/CT/PET Spatial 3D Distortion Rectangular Insert
Refer to separate CIRS cavity and plug code list for available chamber cavities.
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