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. 2020 Aug 14;9(8):2647. doi: 10.3390/jcm9082647

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© 2020 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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ImageJ measurements of echostructure and first-order descriptors of the lumbar multifidus (LM) and the thoracolumbar fasciae (TLF). (A) Representation of the measurement protocol using ImageJ: Central line (1. Central line, magenta), Thoracolumbar fasciae distance reference (2. TLF-Distance, green), thickness (TH) of the thoracolumbar fasciae (3. TLF-TH, blue), cross-sectional area (CSA) of the lumbar multifidus at resting (4. CSA of LM red), width of the lumbar multifidus (5. LM width, yellow), region of interest (ROI) of lumbar multifidus at midpoint (6. ROI 145 × 145 pixels, orange), and vertical line reference for ROI adjustment (7. Vertical reference, cyan). (B) CSA of LM histogram displayed. (C) ROI of LM histogram displayed.