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Fig. 6 | BMC Musculoskeletal Disorders

Fig. 6

From: Methodological considerations in region of interest definitions for paraspinal muscles in axial MRIs of the lumbar spine

Fig. 6

Example MRI axial cross-sections illustrating differences in presentation of muscle quality and size across patients. Panel a illustrates a healthy patient with no atrophy or fatty infiltration, demonstrating approximation of the epimyseum and border of the lumbosacral fascia. Panel b demonstrates an individual with no epimuscular fatty infiltration, but significant fatty deposition within the muscle compartment. Panel c represents a patient with very little muscle fatty infiltration within the epimyseal border, and epimuscular fat accumulation between the lumbosacral fascia and the paraspinal muscle compartments. Panel d demonstrates an individual with both intramuscular and epimuscular fatty infiltration

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