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Table 7 Gamma passing rate for 6MV FFF photon beam IMRT / VMAT plan

From: Dosimetric characteristics of 6MV flattening filter free and flattened beams among beam-matched linacs: a three-institutional study

Treatment plan

Linac 1

Linac 2

Linac 3

C119 IMRT

99.2%

97.2%

99.1%

HEAD AND NECK 119 IMRT

98.6%

97.2%

97.5%

ANAL VMAT

99.6%

97.2%

96.9%

C VMAT

98.4%

95.1%

96.1%

HEAD AND NECK 119 VMAT

98.8%

95.6%

97.1%

HEAD AND NECK 244 VMAT

99.4%

98.4%

97.3%

PROSTATE VMAT

99.7%

97.4%

98.2%

Average gamma passing rate

99.10%

96.87%

97.46%