. Author manuscript; available in PMC: 2017 Mar 18.

Published in final edited form as: Int J Radiat Oncol Biol Phys. 2012 Sep 11;84(5):e655–e661. doi: 10.1016/j.ijrobp.2012.07.2367

Table 3. 3D position discrepancy between KIM and kV/MV triangulation.

Patient	No. of fractions	No. of images acquired	No. of images used for triangulation	Accuracy ± SD (mm)^*
5	39	872	50	0.25 ± 0.25
6	40	543	40	0.34 ± 0.18
7	38	735	40	0.86 ± 0.48
8	37	332	34	0.67 ± 0.44
9	20	766	270	0.36 ± 0.20
9	36	561	90	0.32 ± 0.17
10	39	994	30	0.39 ± 0.58
Total		4803	728	0.46 ± 0.58

Standard deviation (SD) provides a measure of the variability of the accuracy.