Ultrasonography in maxillofacial Imaging – a review

Ultrasonography is being currently used in imaging of various head and neck pathologies owing to its non-invasive nature and has gained wider acceptance in maxillofacial imaging. In this paper we will take a relook of Ultrasonographic imaging in areas such as its historical Background, basic principles, wide array of applications in Maxillofacial pathologies and advantages, disadvantages, Newer techniques in Ultrasonographic Imaging. Key words: Piezoelectric, Transducer, Fresnel zone, Fraunhofer zone, Reverberation artefact