Non-Linear Effects at High-Speed Moving Table Imaging

Ulrich Katscher¹, Oliver Lips¹

Continuously moving table imaging is an alternative to multi-station techniques for, e.g., MR angiography. In the past years, the provided table speed increased from typically ~1 cm/s up to ~5 cm/s. Assuming a long-term continuation of this trend of increasing table speed, one has to keep in mind that at table speeds approaching ~3&[middot]10⁹ cm/s, non-linear, relativistic effects has to be taken into account. This study investigates possible consequences, particularly on scan time and RF field distortions due to the Lorentz transformation. The study is based on simulations due to the current lack of suitable MR systems.