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Figure 4: (a) Posterior tibial nerve in a healthy volunteer at 3 cm above medial malleolus with CSA 0.055 cm2 or 5.5 mm2 (b) Posterior tibial nerve in a patient with DPN at the same level with CSA 0.121 cm2 or 12.1 mm2 on color Doppler image

Figure 4: (a) Posterior tibial nerve in a healthy volunteer at 3 cm above medial malleolus with CSA 0.055 cm<sup>2</sup> or 5.5 mm<sup>2</sup> (b) Posterior tibial nerve in a patient with DPN at the same level with CSA 0.121 cm<sup>2</sup> or 12.1 mm<sup>2</sup> on color Doppler image