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Table 3 Differences between the IG technique using 4D-CBCT and the two IG techniques using 3D-CBCT (average ± one standard deviation [StDev])

From: Accuracy and inter-observer variability of 3D versus 4D cone-beam CT based image-guidance in SBRT for lung tumors

 

LR [mm]

SI [mm]

AP [mm]

3D vector [mm]

 

Average

St Dev

Average

St Dev

Average

St Dev

Average

St Dev

IG-4D minus IG-3D

0.1

± 0.9

1.2

± 4.3

0.0

± 1.8

3.6

± 3.2

IG-4D minus IG-ITV

0.0

± 0.7

0.9

± 1.5

0.0

± 1.0

1.9

± 0.9

  1. Left-right direction (LR), superior-inferior direction (SI) and anterior-posterior direction (AP).