Table 1.

Intensity‐modulated radiotherapy quality assurance survey, general methods

Subject/question	Answer options
How often do you use single gantry angle, composite IMRT QA? (i.e. All fields irradiated at normal incidence, added together.)	Never. I always do field‐by‐field analysis.
	Less than 25% of patients
	25–49% of patients
	50–74% of patients
	75–100% patients
Frequency of absolute dose analysis vs. relative dose analysis	I never use absolute dose analysis.(I always use relative dose analysis.)
	I use absolute dose analysis, but less than 50% of the time.
	I use absolute dose analysis approximately 50–74% of the time.
	I use absolute dose analysis approximately 75–99% of the time.
	I use absolute dose analysis 100% of the time.