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Table 5 Validation of BrainLAB imaging couch top (ICT) modeled in iPlan RT Dose treatment planning system (TPS); comparing measured dose with TPS computed dose

From: A validation of carbon fiber imaging couch top modeling in two radiation therapy treatment planning systems: Philips Pinnacle3 and BrainLAB iPlan RT Dose

(a) 10 cm × 10 cm field size
  iPlan RT Dose predicted dose (cGy) Percentage deviation from measured dose
Angle Measured dose (cGy) No ICT With ICT No ICT With ICT
180 89.3 92.45 89.34 3.49 0.01
170 89.0 92.16 89.00 3.59 0.04
160 87.9 91.24 87.92 3.81 0.03
150 85.9 89.34 85.92 4.06 0.07
140 82.4 86.63 82.44 5.14 0.05
130 76.7 82.01 77.59 6.89 1.13
120 67.5 74.27 67.32 10.04 -0.26
110 58.0 63.17 58.55 8.89 0.92
100 64.5 65.42 65.43 1.40 1.42
(b) 5 cm × 5 cm field size
180 81.2 84.09 80.48 3.55 0.90
170 80.8 83.76 80.14 3.61 0.87
160 79.7 82.74 79.03 3.88 0.78
150 77.5 80.67 76.76 4.09 0.96
140 74.0 77.79 73.26 5.13 0.99
130 68.3 72.91 67.74 6.72 0.85
120 59.2 64.71 58.56 9.27 1.12
110 50.0 53.7 49.78 7.31 0.52
100 56.0 55.74 55.74 -0.55 0.55
  1. Note that the “measured dose (cGy)” is the dose measured as described in phantom dose measurement through the imaging couch top.