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. 2015 Oct 12;10(10):e0140315. doi: 10.1371/journal.pone.0140315

Fig 6. Horizontal views of the posterior lumbar spine in CT images.

Fig 6

(a) Through the upper level of the lumbar spine (L1), ML (red arrows), SQ (white arrows) and LI (blue arrows) were identified by line-shaped low densities within the paraspinal muscles. (b) Through the lower level of the lumbar spine (L5), only the ML was identified. M: multifidus; L: longissimus; I: iliocostalis; IS: iliac spine; QL: quadratus lumborum; PS: psoas major.