Harmonic Phase MRI
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MR tagging has not become a standard clinical tool in large part because it has required excessive imaging and processing time. Harmonic phase (HARP) MRI addresses this issue by exploiting the unique Fourier spectrum of tagged MR images in fast, automatic computations of cardiac motion requiring very little Fourier data. To date these methods have been used in two-dimensional (2-D) cardiac motion analyses [1–3], have been validated in human and animal studies [4, 5], and have been extended to three dimensions . HARP-MRI requires very little Fourier data, so that real-time, 2-D imaging should be possible in the near future and breath-hold, 3-D imaging may be possible as well.
KeywordsCircumferential Strain Harmonic Image Pace Site Lagrangian Strain Pace Lead
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