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Table 1 Comparison between CBCT and 3DUS shifts for group A and group B

From: Analyses of the factors influencing the accuracy of three-dimensional ultrasound in comparison with cone-beam CT in image-guided radiotherapy for prostate cancer with or without pelvic lymph node irradiation

  Group A (with pelvic lymph node irradiation) Group B (without pelvic lymph node irradiation)
SI LR AP SI LR AP
Mean ± SD −1.03 ± 5.40 −0.60 ± 3.62 − 0.82 ± 4.41 0.29 ± 5.11 0.19 ± 3.33 − 0.20 ± 4.22
P value < 0.001 < 0.001 < 0.001 0.143 0.153 0.227
Shift agreement (%) 64.4 84.9 75.9 70.1 89.2 79.1
LOA (mm) (−11.61, 9.55) (−7.70, 6.50) (−9.46, 7.82) (− 9.73, 10.31) (− 6.34, 6.72) (− 8.47, 8.07)
  1. CBCT Cone-beam computed tomography, 3DUS Three-dimensional ultrasound, SI Superior-inferior, LR Left-right, AP Anterior-posterior, SD Standard deviation, LOA Limits of agreement