Sonography is a technique based on sound waves that acquires images in real time without the use of ionizing radiation. The phenomenon perceived as sound is the result of periodic changes in the pressure of air against the ear-drum. The periodicity of these changes ranges from 1500-20,000 Hz. Ultrasound has a periodicity greater than 20Continue reading “ULTRASONOGRAPHY: Introduction, Principles, Indications, Advantages & Disadvantages”
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CONE BEAM COMPUTED TOMOGRAPHY (CBCT)
CBCT imaging is the most significant technologic advances in maxillofacial imaging since the introduction of panoramic radiograph. It was initially developed commercially for an angiography. It uses a divergent cone shaped or pyramidal shaped source of ionizing radiation and two dimensional area detector fixed on a rotating gantry, to provide multiple sequential transmission images thatContinue reading “CONE BEAM COMPUTED TOMOGRAPHY (CBCT)”
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