Ultrasonographic (USG) imaging in orofacial diseases– A review

Diagnostic ultrasound has become a radiology subspecialty. Ultrasonography(USG) is a procedure in which highenergy sound waves are bounced off internal tissues or organs and make echoes, which are picked up by the transducer and converted into an electrical signal and then into a real-time black, white and grey visual echo picture, which is displayed on a computer screen. The principles, various indications, advantages, disadvantages and advanced applications of ultrasonography in relation to maxillofacial region are enlightened in this review article.