Renjie He1,
Joshua P. Yung1, David T. A. Fuentes1, R. Jason
Stafford1, John D. Hazle1
1Department
of Imaging Physics, The University of Texas M. D. Anderson Cancer Center,
Houston, TX, United States
FFT Based phase unwrapping is a straight, flexible and fast method; however, it suffers from the phase distortion in practice. We tried to recover the phase unwrapping exactly by quantizing the dispersed integer filed into an integer field through Powell optimization. The exact phase unwrapping was obtained for phantom phase MR images. This approach is useful in quantitative analysis based on phase images.
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