Skip to main content

Table 1 Registration comparisons via pairwise differences in the proportions of slices with the rectum alignment approved. See the abbreviations list or the non-rigid registration section of the methods section for information about D, HS, V1 and V2

From: Registering prostate external beam radiotherapy with a boost from high-dose-rate brachytherapy: a comparative evaluation of deformable registration algorithms

  

Rectum approval-proportion

  

Registration comparison

N

median difference

Z-value

P-value

V2 versus V1

21

–0.032

–3.44

0.0002

HS versus V1

21

–0.169

–3.84

<0.0001

HS versus V2

21

–0.124

–3.22

0.0006

D versus V1

21

–0.241

–4.02

<0.0001

D versus V2

21

–0.189

–4.00

<0.0001

D versus HS

21

0

–

–

  1. N is the number of patients to whom the registrations were applied. The pairwise difference is calculated as the first mentioned registration subtract the second mentioned registration. The Z-value and p-value are from the Wilcoxon signed-rank test of the pairwise differences against a median of zero (this test is not appropriate when the median difference is zero). A significant negative difference indicates the second mentioned registration is superior