Enhanced SAR Compression

***Please note that a much improved Version can be found on Github:***
https://github.com/sOrzada/VOP_Compression

This work is described in:
Orzada S, Fielder TM, Quick HH, Ladd ME,
"A local SAR compression algorithm with improved compression, speed and flexibility",
https://doi.org/10.1002/mrm.28739.

This new algorithm is an iterative expansion of the exisisting local SAR compression algorithm for MRI proposed by Lee et al. ( https://doi.org/10.1002/mrm.23140)

The number of VOPs is approximately halved with the new algorithm, while at the same time the compression time is reduced with speed-up factors of up to 2.5.