[Ultrasonic diagnostics of the external nose].

Twenty megahertz ultrasound B-scanners achieve an axial resolution of 80 microns. The range of 7 mm in soft tissue suffices for imaging of dermal and cartilaginous structures with anatomical precision, and the form, position and diameter of the cartilaginous structures of the nose can be assessed. Distinct echoes within the cartilage indicate inflammation or trauma. The position, scarring and rate of resorption of implants can be observed non-invasively.