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Timeline of implementation
1984-6
First gating devices suggested
1996
Experimental gating device used for breast cancer gating
1999
Voluntary breath-hold for breast cancer used experimentally
2000
Varian RPM system released
2001
4DCT suggested
2003
Gating for breast as clinical routine
2004
Robotic tracking CyberKnife Synchrony
2005
4D CBCT
2006
Mid-ventilation phase approach suggested for lung
2009
Vero machine with tracking released
2014
First dynamic MLC tracking treatment
2014
MR guided 4D radiotherapy