Fig. 1

Magnetic Resonance Elastography of the lumbar spine. Axial T2-weighted MRI (A & C) with corresponding MR elastograms (B & D) of the lumbar spine. DS: Dural sac, ES: Erector spinae, FO: Fish oil capsule (actuators placement), IVD: Intervertebral disc, MM: Multididus, PM: Psoas major, QL: Quadratus lumborum, VEP: Vertebral endplate. SWS: Shear Wave Speed in m/s