Dosimetry of Xoft

Calibrations were performed by comparing well-type ionization chamber response to air kerma with a NIST primary X-ray standard, and dosimetry of Axxent low-energy X-rays was commissioned [15-17]. The dosimetry of superficial therapy and the dosimetry at the surface of a phantom were recommended [18].

Axxent system incorporates a commercially available well chamber and electrometer (Models HDR 1000 Plus and MAX-4000, respectively) supplied by Standard Imaging Inc. A custom insert, with higher attenuation than Standard Imaging Inc. also provided a typical insert, specifically for the Axxent system (Standard Imaging Inc., part number 70088).