Improving the accuracy of 2D phase unwrapping using a triplanar approach.

Wraps in phase images can be removed by spatial unwrapping in 2D or 3D. Generally, 2D is more prone to errors and 3D is very time consuming. 2D phase unwrapping is nearly universally performed in the axial plane. We investigate the possibility of increasing the accuracy of 2D phase unwrapping by unwrapping in other planes, and by combining the results of unwrapping in the three primary planes - Triplanar unwrapping. Results from simulated and high resolution in-vivo 7T data show that unwrapping in the sagittal plane is superior to axial, and the Triplanar approach reduces errrors to close to zero.

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