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. 2014 Jun 2;43(5):20130403. doi: 10.1259/dmfr.20130403

Figure 2.

Figure 2

Illustration of five region of interest (ROI) sets in MR images of hyoid muscles (Figure 1d) to illustrate ROI sets. (a) Circular ROIs and ROI size depending on the muscle. All the patients have ROIs of the same size in the corresponding muscle. ROI location (I). (b and c) Circular ROIs of the same sizes as in (a), but the exact location (II and III) inside the muscles varies. (d) ROI locations the same as in (a) (I), but ROI sizes vary among patients so that the circular ROI is always as large as possible. (e) ROI dimensions and locations (I) the same as in (a), but ROI shape is a square.