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Table 4 OAR sparing comparison

From: Feasibility of constant dose rate VMAT in the treatment of nasopharyngeal cancer patients

  CDR-VMAT VDR-VMAT MCO-VMAT p
Brainstem     
Dmax (Gy) 54.26 ± 3.21 52.19 ± 1.65 52.79 ± 4.77 0.01
Cord     
Dmax(Gy) 45.12 ± 4.94 44.59 ± 2.10 44.11 ± 4.37 0.47
Left parotid    
Dmean (Gy) 29.72 ± 1.48 28.42 ± 1.75 28.46 ± 2.70 0.93
V26 (%) 53.84 ± 4.41 50.55 ± 3.75 49.73 ± 8.82 0.34
V32 (%) 34.36 ± 5.50 33.22 ± 5.28 33.01 ± 9.33 0.16
V50 (%) 6.44 ± 5.05 6.55 ± 5.65 5.72 ± 4.58 0.68
Right parotid    
Dmean (Gy) 29.79 ± 1.73 28.76 ± 1.15 28.6 ± 2.18 0.98
V26 (%) 48.04 ± 3.90 47.38 ± 3.75 48.45 ± 7.99 0.42
V32 (%) 31.78 ± 5.80 30.22 ± 5.35 30.84 ± 8.28 0.30
V50 (%) 7.07 ± 3.81 6.17 ± 3.93 6.26 ± 3.34 0.45