VERSATILE COMMISSIONING
Dose measurements with film and ion chambers for commissioning treatment systems and for specific plan dose verification
versatile use with ion chambers or film
Film and ion chamber dose measurements are achieved in one water equivalent phantom designed specifically for stereotactic radiosurgery.
Ion Chamber Measurements - The 2 cm Blue Water ion chamber slab has a cavity which accommodates inter-changeable ion chamber plugs, therefore one slab can accommodate several plugs drilled for different ion chambers. The ion chamber plug positions the ion chamber in the exact center of the phantom to facilitate repositioning and fast, accurate measurements. Two drilled ion chamber plugs and one solid plug are included with each phantom.
Film Dosimetry Measurements - Five water equivalent Blue Water slabs allow film to be positioned 2 mm apart for dose profile measurements of very small SRS targets. A cavity in each slab positions a 2.5 x 2.5 inch film in the exact center.
exact positioning indicators
Laser alignment lines are provided to accurately position the phantom for CT planning scans and for treatment. Fiducial markers are implanted throughout the phantom so the CT and TPS geometric accuracy can be tested.
Compact size for easy handling
The entire phantom is 20 x 20 x 10 cm in size.
SRS DOSIMETRIC QA SLAB
The optional SRS Dosimetric QA Slab provides targets to evaluate the imaging components of your treatment planning system and test the accuracy of the planned dose.
Phantom Components and Accessories
Build-up Slabs
- Two 4.0 cm thick Blue Water slabs are provided. One is positioned above and another is positioned below the film or chamber dosimetry slab to provide adequate build-up.
- White fiducial lines are located on the X, Y, Z coordinates of the phantom
- Locking pins provide a clamping mechanism to prevent the phantom slabs from moving
Ion Chamber Measurement Slab
- One 2.0 cm slab is provided with two ion chamber plugs drilled to accomodate the Exradin A16 and A19 Ion Chambers, and one solid ion chamber plug
- Additional ion chamber plugs for other ion chambers are also available
Film Measurement Slab
- Five 20 x 20 x 0.2 cm slabs are provided which have a centered pocket for one pre-cut film. Two 20 x 20 x 0.5 mm slabs, together with the build-up slabs and locking pins, secure the film slabs to provide a secure handling environment.
SRS Dosimetry QA Slab (Optional, REF 70650)
- This accessory contains target geometries, target densities, and known volumes for commissioning treatment planning systems. This compact phantom slab, 20 x 20 x 2 cm, provides the geometric tests needed to evaluate the imaging components of your treatment planning system. It replaces the dosimetry slabs centered in the phantom.
- The SRS Dosimetry QA Slab is an excellent phantom to evaluate the ability of your treatment planning system to accurately create DRR from CT scans.
Stereotactic Dose Verification Phantom - Ion Chamber Configuration
Stereotactic Dose Verification Phantom - Film Configuration
SRS Dosimetric QA Accessory Slab - REF 70650
