Skip to main content

Table 2 Bladder changes and metrics for adaptive sessions performed with and without bladder filling control procedure

From: Effectiveness of bladder filling control during online MR-guided adaptive radiotherapy for rectal cancer

 

Bladder filling control

No bladder filling control

Adaptive sessions, MRI

 Number, number

109, 218

60, 120

\(\Delta\)Time [\({\text{MRI}}_{i}\) − \({\text{MRI}}_{f}\)] (min)

 Median

38

36

 Range

25–111

14–67

DSC

 Median

0.922

0.783

 Range

0.863–0.994

0.309–0.949

Hausdorff distance (mm)

 Median

2.92

5.44

 Range

1.23–4.87

2.60–11.94

Bladder \(\Delta\)volume (%)

 Median

8.17

33.46

 Range

2.15–22.51

5.16–170.7

  1. MRI magnetic resonance imaging, MRIi/MRIf magnetic resonance imaging at the start/end of the adaptive session, DSC dice similarity coefficient