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. Author manuscript; available in PMC: 2014 Aug 14.
Published in final edited form as: IEEE Trans Image Process. 2014 Mar;23(3):1340–1351. doi: 10.1109/TIP.2014.2300751

Fig. 2.

Fig. 2

Orientations of (a) human and (b) pig blood pool surfaces in the source image coordinate system. The reference directions are left(L), right(R), posterior(P), anterior(A), inferior(I), and superior(S).