Figure 2 | Scientific Reports

Figure 2

From: Prospective comparative analysis of three types of decompressive surgery for lumbar central stenosis: conventional, full-endoscopic, and biportal endoscopic laminectomy

Figure 2

Measurement of the cross-sectional area of the dural sac and multifidus muscle in axial T2-weighted MR images. The area was estimated automatically by tracing a line (red dotted) along the outer wall of the dural. An additional line (yellow solid) was drawn to identify the deteriorated multifidus muscle after surgery. Lean muscle cross-sectional area (CSA) was the sum of all the areas outlined. These methods allow for the comparison of pre- and postoperative conditions, enabling the confirmation of the muscle and dural CSA.

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