What is the normal echotexture of peripheral nerves?
Peripheral nerves demonstrate a fascicular appearance in which individual nerve fascicles are hypoechoic. The hypoechoic fascicles are surrounded by hyperechoic connective tissue referred to as epineurium. Large peripheral nerves will often be surrounded by a rim of hyperechoic fat. Short axis imaging is often helpful to clarify that an interrogated structure indeed represents a nerve, because peripheral nerves display a characteristic speckled or honeycomb appearance in short axis
