Test purpose

Verify the  detection capability of the IQM System for a variety of clinically relevant delivery errors.

Test method

3 clinical IMRT plans were modified: Brain, Prostate, Head & Neck. All errors had a clinical effect: DVH parameters of either the targets or organs at risk changed by a few percentages.

Test results

The following table shows for how many beams within each of the 9 field plans IQM detected the induced error. Only one error remained undetected.


IQM showed a very high error detection rate. Using a watch level of 2% and an action level of 3% IQM would have detected all but one of the induced errors.