Prediction-Based Compensation for Gate On/Off Latency during Respiratory-Gated Radiotherapy

Table 1

Gate on and off latencies of some gating systems.

Monitor	Linac	Gate on delay	Gate off delay	Reference
Abches (APEX)	Elekta Synergy	336 ms	88 ms	[4]
AlignRT (VisionRT)	Varian Clinac iX	356 ms	529 ms	[5]
Calypso (Varian)	Varian Clinac iX	209 ms	60 ms	[5]
Catalyst (C-RAD)	Elekta Synergy	851 ms	215 ms	[6]