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Table 2 Comparison between CBCT and 3DUS shifts for patients using TAUS and TPUS modality

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

  TAUS TPUS
SI LR AP SI LR AP
Mean ± SD −0.50 ± 5.32 − 0.44 ± 3.90 −1.11 ± 4.16 −0.03 ± 5.22 0.18 ± 2.87 0.31 ± 4.37
P value 0.019 0.005 < 0.001 0.899 0.151 0.103
Shift agreement (%) 67.8 83.4 78.5 67.3 92.1 76.7
LOA (mm) (−10.93, 9.93) (−8.08, 7.20) (−9.26, 7.04) (− 10.26, 10.20) (−5.45, 5.81) (− 8.26, 8.88)
  1. CBCT Cone-beam computed tomography, 3DUS Three-dimensional ultrasound, TAUS Transabdominal ultrasound, TPUS Transperineal ultrasound, SI Superior-inferior, LR Left-right, AP Anterior-posterior, SD Standard deviation, LOA Limits of agreement