Constancy Tests

This set of tests ensured that the machine’s radiation output is stable and consistent.

To test this, 3 identical treatments are performed with select collimators and the coefficient of variation for dose, dose rate, kVp, and half value layer (HVL) of the beam is calculated.

The radiation output of the system is known to be very stable across exposures.

NEXT: Output & Accuracy (2.5 mins)