Figure 4From: The value of high-frequency and color Doppler ultrasonography in diagnosing congenital muscular torticollis A. Vertical section of the sternocleidomastoid muscle (SCM) in a patient with late-stage muscular torticollis. B. Vertical section of the SCM of the normal side. The affected sternocleidomastoid muscle is thinned, and diffuse hyperechoic signals are apparent.Back to article page