Single-Shot Magnetic Resonance Imaging of a Moving Object Based on the High-Speed Spiral-Scan Echo Planner Technique at 4.7T

The single-shot spiral magnetic resonance imaging (MRI) technique was implemented and optimized on a Bruker Biospec47/30 scanner. The technique includes the pulse sequence for generation and detection of the k-space MRI signal (free induction decay (FID)), and PC based programs for the data grid and image reconstruction. The temporal resolution is 70 ms (14 images per second), which consists of a data acquisition time as short as 13.7 ms, spin-echo time of 13.6 ms and the a magnetization recovery time of 43 ms. This makes it possible to take real time images of moving objects. The technique is demonstrated using a pendulum (tube) filled with water.