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. Author manuscript; available in PMC: 2022 Sep 1.
Published in final edited form as: J Anat. 2021 May 25;239(3):545–556. doi: 10.1111/joa.13451

FIGURE 2.

FIGURE 2

DTI of paediatric and adult cadaveric human larynges. (a) Trace and directionally encoded colour maps of a 13-month-old male, 10-year-old female and 74-year-old female larynx at the glottis in the axial plane. The trace maps show the diffusivity of water within the specimens. The directionally encoded colour maps are weighted by anisotropy and show the primary orientation of tissue fibres: green, anterior-posterior; red, medial-lateral; blue, cranial-caudal. Note: The 74-year-old specimen had the lateral thyroid cartilage laminae resected prior to imaging. (b) Mean diffusivity and fractional anisotropy of six skeletal muscle and two mucosal regions within each larynx. Measurements were obtained via manual tracing of each region of interest in the relevant DTI images from each full larynx scan. DTI, diffusion tensor imaging; IA, interarytenoid muscle; IGM, infraglottic mucosa; LCA, lateral cricoarytenoid muscle; LTA, lateral thyroarytenoid muscle; mo, month; MTA, medial thyroarytenoid muscle; PCA, posterior cricoarytenoid muscle; VFM; vocal fold mucosa; y, year. Scale bar, 5 mm