Adapted MRI Recording Sequence for SMS Slice Crosstalk Reduction

The patent divides the slice excitation into separate temporal groups by introducing a temporal interleaving pattern. Slices are excited in an interleaved manner across multiple temporal groups rather than all at once, which segments the excitation events in time. This segmentation reduces the overlap between adjacent slice excitation profiles, thereby reducing slice crosstalk artifacts while maintaining accelerated recording through simultaneous multi-slice capability.

The patent applies preliminary action by introducing a temporal delay between the excitation of adjacent slices before the signal acquisition begins. By pre-establishing this temporal separation through the interleaved excitation pattern, the excitation profiles of adjacent slices do not overlap, preventing crosstalk artifacts from occurring during the recording process itself.

The patent implements periodic action by using a repeating temporal interleaving pattern across multiple repetition cycles. The same interleaved excitation pattern is applied consistently across all temporal groups and repetition cycles, creating a periodic structure that simplifies the overall sequence design. This periodicity makes the complex temporal interleaving manageable and systematic, reducing the practical complexity of implementation.

The patent applies dynamics by making the temporal separation between slice excitations adjustable rather than fixed. The temporal delay parameter can be dynamically optimized based on the specific imaging requirements, slice characteristics, and desired balance between crosstalk reduction and recording efficiency, allowing flexible adaptation to different imaging scenarios.