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Table 2 Comparison of renal doses between RapidArc (RA) and conventional radiation therapy (3D-CRT) plans.

From: Bilateral kidney preservation by volumetric-modulated arc therapy (RapidArc) compared to conventional radiation therapy (3D-CRT) in pancreatic and bile duct malignancies

  3D-CRT    RA    
  mean SD Range mean SD Range p-value
Homolateral kidney       
Mean dose (Gy) 12.6 8.3 1.1-31.5 4.7 1.9 2.9-10.2 < 0.0001
V5 (%) 52.2 27.0 4.1-95.9 40.0 21.5 4.3-93.0 0.0033
V10 (%) 43.6 25.8 1.89-90.1 6.4 11.8 0-37.0 < 0.0001
V20 (%) 31.8 24.0 0.0-80.7 0.8 2.9 0.0-13.7 < 0.0001
Controlateral kidney       
Mean dose (Gy) 1.8 2.1 0.2-8.7 3.9 0.9 1.8-5.6 0.0007
V5 (%) 6.7 11.4 0.0-41.38 34.0 18.5 3.5-80.5 < 0.0001
V10 (%) 3.9 8.1 0.0-30.92 2.2 8.1 0.0-37.3 0.4131
V20 (%) 2.1 4.9 0.0-19.9 0.0 0.0 0.0-0.0 0.1641
Both kidneys       
Mean dose (Gy) 7.1 4.2 0.9-16 4.3 1.1 2.4-6.9 0.0014