Source of Support: None, Conflict of Interest: None
A diamond detector was used to measure dose distributions around a Nucletron microSelectron 192lr HDR source. Relative 2D dose distributions along the source axis (0-7 cm) at distances ranging from 0.5 to 7 cm from the source center were measured in a water phantom. Relative dose rates transverse to the source axis were also measured at distances of 0.5-7 cm from the source center. The measured data was normalized to 1.115-cGy h-1U-1 along the source transverse axis at 1 cm. Excellent agreement between measured, two-dimensional dose distributions and corresponding published TLD/diode measurements and Monte Carlo calculations was observed.