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Table 5 BD results after CBCT-based setup correction (115 CT/CBCT pairs of 10 patients). Before registration, air was replaced by soft tissue in images.

From: Development of CBCT-based prostate setup correction strategies and impact of rectal distension

 

Without RR

Manual-contour RR

Global RR

Bony RR

Local RR

  

(reference)

  

1 mm

3 mm

5 mm

8 mm

10 mm

12 mm

15 mm

20 mm

BD* median (mm)

2.86

1.48

2.09

2.17

2.23

2.24

1.89

1.91

1.89

1.97

2.00

1.95

BD* SD (mm)

1.18

0.32

0.64

0.71

1.90

1.69

1.08

0.49

0.59

0.55

0.61

0.66

  1. *BD stands for Bidirectional Distance. It was calculed for each contour comparison by averaging the BLD values over the reference contour.
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Radiation Oncology

ISSN: 1748-717X

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