TABLE 1.

Summary of detector systems used for commissioning the virtual cone at Tri‐Cities Cancer Center (TCCC)

Commissioning process	Measurement type	Detector system
Beam model adjustment	HD120 MLC dosimetric leaf gap measurements	Farmer chamber
Output and profile verification	Virtual cone output	W2, EBT3 film
	Virtual cone profile	EBT3 film
	Absolute dose calibration	ADCL‐calibrated Farmer chamber
	Daily output constancy	DailyQA3
Output factor constancy	Virtual cone output factors	Exradin A11 parallel‐plate chamber
Neutron measurements	Virtual cone neutron dose	Ludlum 30–7 neutron meter
	Photon background	Inovision 451P survey meter
Patient‐specific QA	Virtual cone output and profile	EBT‐XD film