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• High-energy sources for HDR brachytherapy
–
192
Ir most common with
60
Co under development
– outer diameter < 1 mm
– treatments from 2 to 20 minutes
D
Rx
> 12 Gy/h or > 0.2 Gy/min.
– regulatory activity 4 to 12 Ci
– shielding/licensing required
• Vendors for HDR
192
Ir brachytherapy RAUs
– Nucletron/Elekta (microSelectron + Flexitron)
– Varian (VariSource + GammaMed)
– BEBIG (MultiSource)
HDR Brachytherapy Systems