Table 1.

Processing time and errors in translation and rotation for AIR in determining the alignment transform for simulated 9.4 Tesla 23Na images of the same brain.

Voxel Size (mm)	Alignment Time2 (s)	Absolute Translation Error (mm)			Absolute Rotation3 Error (degrees)
		X	Y	Z	α	β	γ
2.9	0.978 ± 0.382	0.005 ± 0.004	0.005 ± 0.004	0.006 ± 0.004	0.006 ± 0.007	0.006 ± 0.008	0.005 ± 0.005
2.9+B1	0.820 ± 0.307	0.009 ± 0.014	0.014 ± 0.010	0.022 ± 0.004	0.013 ± 0.009	0.014 ± 0.009	0.011 ± 0.009
4.4	0.625 ± 0.222	0.013 ± 0.012	0.016 ± 0.022	0.009 ± 0.006	0.012 ± 0.014	0.012 ± 0.012	0.009 ± 0.007
4.4+B 1	0.590 ± 0.241	0.012 ± 0.009	0.017 ± 0.016	0.018 ± 0.012	0.013 ± 0.012	0.013 ± 0.010	0.012 ± 0.008
5.9	0.461 ± 0.165	0.029 ± 0.041	0.027 ± 0.030	0.024 ± 0.023	0.022 ± 0.025	0.028 ± 0.044	0.022 ± 0.022
5.9+B1	0.439 ± 0.154	0.023 ± 0.031	0.026 ± 0.026	0.034 ± 0.023	0.022 ± 0.022	0.023 ± 0.033	0.019 ± 0.016
8.8	0.270 ± 0.061	0.069± 0.070	0.080 ± 0.070	0.039 ± 0.056	0.070 ± 0.082	0.070 ± 0.090	0.066 ± 0.061
8.8+B1	0.269 ± 0.057	0.054± 0.072	0.064 ± 0.071	0.040 ± 0.033	0.066 ± 0.063	0.065 ± 0.041	0.050 ± 0.045

¹Image data reconstructed with a Blackman k-space filter

²Processing was performed on an Apple Macbook Pro with a 2.2 GHz Intel Core i7 and 8 GB of random access memory.

³Rotations around the X, Y, and Z axes are denoted α, β, and γ, respectively.