Figure 2From: Occipital peripheral nerve stimulation in the management of chronic intractable occipital neuralgia in a patient with neurofibromatosis type 1: a case report An ultrasound image of the left occipital nerve as well as two divisions of the greater occipital artery as they pierce the substance of the trapezious muscle 1.0 cm to 1.2 cm from the skin.Back to article page