1. Dosimetric Measurements
Surface Applicator
Dosimetric Measurements

2. Xoft Dosimetry
As a leader in dosimetric studies, Xoft routinely creates custom fixturing to characterize performance of the Axxent source and applicators
For the surface applicator the effort involves both film and ion chamber based apparatus

3. Film Water Phantom
Beam profiles at various depths via end-on films

4. Film Water Phantom
Or all at once with an edge-on film

5. Film Profiles of 30 mm Applicator
Profiles at 0, 5 and 10 mm from applicator surface

6. Film Profiles of 30 mm Applicator
Profile at applicator surface

7. Film Profiles of 30 mm Applicator
Profile at 5 mm from applicator surface

8. Film Profiles of 30 mm Applicator
Profile at 10 mm from applicator surface

9. Effect of a Flattening Filter
With the Xoft 50 kVp spectrum, it is easy to turn this...
Unfiltered intensity profiles
At applicator surface
5 mm deep

10. Effect of Flattening Filter
Into this…
or even into a custom pattern
Filtered intensity profiles
At applicator surface
5 mm deep

11. Data Extraction from Edge-on Films
Start with a calibrated film image…

12. Data Extraction from Edge-on Films
Select points to extract dose values from…

13. Data Extraction from Edge-on Films
And get a series of profile plots at different depths

14. Data Extraction from Edge-on Films
Or change the pattern…

15. Data Extraction from Edge-on Films
And get a series of depth dose plots at different positions

16. Ion Chamber Based Apparatus
Miniature ion chamber rotates around surface applicator

17. Ion Chamber Provides Absolute Dose Data
Good check on film calibration

18. Xoft Surface Applicator
Xoft is committed to extensive dosimetric characterization of all existing and future applications of the Axxent source