Table 4.

Estimates for center detection bias, standard deviation (intra‐ and interobserver variability), and RMSE in millimeters by method. Estimates are posterior means with 95% credible intervals in brackets. Bold values indicate significant difference from manual method

	Phantom	Contrast	Error of method (mm)
			Bias	Std. Deviation	RMSE
Manual	NEMA	9.7:1	1.08 [1.00, 1.14]	0.55 [0.53, 0.57]	1.21 [1.15, 1.27]
	CTN	4:1	1.46 [1.37, 1.54]	1.04 [1.01, 1.06]	1.79 [1.72, 1.86]
	CTN	2:1	2.80 [2.62, 2.97]	2.89 [2.81, 2.97]	4.03 [3.89, 4.18]
Auto	NEMA	9.7:1	0.97 [0.91, 1.03]	0	0.97 [0.91, 1.03]
	CTN	4:1	1.12 [1.06, 1.16]	0	1.12 [1.06, 1.16]
	CTN	2:1	1.48 [1.41, 1.55]	0	1.48 [1.41, 1.55]