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Table 1 Cosines of interest and their associated angles for the z axis

From: Quantifying the variability between multiple multiplanar reconstructions of computed tomography scans

Recon zx cosine zx angle (°) zy cosine zy angle (°)
1 −0.015 0.835 −0.008 0.465
2 0.016 −0.905 −0.009 0.488
3 −0.002 0.100 0.017 −0.969
  1. When considering z axis deviations from perfect alignment, errors along the x and y axes are of interest. The cosines produced by reverse rotation are shown for the three reconstructions (recon) along with their associated angular deviations from the z axis (corrected by subtraction of 90°)