Single Point Imaging with Rapid Encoding (SPIRE) is a new imaging technique for measuring fast and repetitive motion. Here, the temporal resolution does not depend on TR but on the duration of the fast-switching phase encoding gradients. We show the abilities of SPIRE by imaging the falling of water drops and reconstruct the images using self-gating. The obtained image data has a temporal resolution below 0.5 ms and the drops oscillations frequency is measured. The good agreement with predictions shows the accuracy and possibilities of this technique.
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