| 摘要 |
A system and method for phase sensitive MRI reconstruction using partial k-space data to reduce either scan time or echo time, depending on whether partial echo or partial NEX MR data is acquired, that retains phase information and reduces edge blurring in a magnetic resonance image. Phase sensitive partial k-space data reconstruction improves upon the homodyne reconstruction process to estimate and correct for an edge blurring convolution error term in a partial echo or partial NEX data while preserving phase information. The phase sensitive partial k-space reconstruction includes Fourier transforming and filtering the partial k-space data through high and low-pass filters, and a linear combination of both, and estimating a blurring correction term, representative of a convolution error factor, from a portion of the filtered data set. Once the blurring correction factor is determined, it is applied to remove the convolution error term from the filter data set in order to reconstruct an MRI having, both magnitude and phase information while minimizing edge blurring that normally results from partial k-space data acquisition.
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