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Table 2 Dose comparison results

From: Accuracy of inverse treatment planning on substitute CT images derived from MR data for brain lesions

 

Diff. D min (%)

Diff. D max (%)

Diff. D median (%)

Diff. D mean (%)

PTV

0.3 (1.6)

−0.3 (0.6)

−0.1 (0.1)

0.0 (0.0)

GTV

0.8 (1.0)

0.5 (0.6)

0.3 (0.8)

0.3 (0.7)

Brainstem

−5.9 (7.9)

−0.4 (4.0)

1.6 (3.7)

−0.4 (1.9)

Pituitary gland

−0.9 (4.0)

0.9 (3.5)

0.7 (3.5)

0.1 (3.4)

Right lens

4.8 (8.6)

0.4 (6.4)

2.3 (7.8)

2.3 (7.7)

Left lens

4.6 (2.0)

−5.0 (24.8)

5.2 (4.4)

5.1 (4.0)

Right opticus

1.2 (5.6)

0.6 (4.7)

1.6 ( 4.0)

2.3 (5.0)

Left opticus

4.2 (4.3)

5.1 (11.6)

−2.2 (11.6)

5.0 (6.3)

Chiasma

−2.1 (3.1)

−0.7 (3.5)

−0.7 (3.3)

−1.0 (3.6)

  1. Legend: Average differences between Dmax, Dmin, Dmedian and Dmean dose for plans optimized on CT and s-CT. The standard deviation calculated based on the five patients are presented within brackets.