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. Author manuscript; available in PMC: 2013 Aug 1.
Published in final edited form as: Conf Proc IEEE Eng Med Biol Soc. 2012 Aug;2012:4386–4389. doi: 10.1109/EMBC.2012.6346938

Figure 2.

Figure 2

Entropy filtering. (A): B-mode image; (B): entropy image; (C): yellow mask highlight the ROI, red region has entropy<4; (D): ROI with size threshold; (E): Crop of the ROI by 20% to exclude muscle near the fascial border; (Legend): Fuscia is subcutaneous tissue, green are fascia, yellow is upper trapezius, blue are underlying muscles.