What is the purpose of a grid Chapter 42?
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Also question is, what is the purpose of extraoral radiographs?
The extraoral radiograph provides an overall image of the skull and jaws. In some cases, an extraoral film is used because the patient has swelling or severe pain and is unable to tolerate the placement of intraoral films.
Subsequently, question is, what is a focal trough? focal trough. A three-dimensional area within which structures are accurately reproduced on a panoramic radiograph. Positioning the patient within the focal trough is critical to producing a panoramic radiograph that clearly reproduces oral structures. See also: trough.
Additionally, why are CBCT images better than a panoramic image?
-A CBCT image is better than a panoramic image because it makes it possible to see al anatomic structures clearly including soft tissue and the exact location of nerves.
Is a three dimensional digital imaging method that uses a cone shaped beam of radiation that rotates around the patient?
Cone beam computed tomography (CBCT) is a radiographic imaging method that allows accurate, three-dimensional (3D) imaging of hard tissue structures. CBCT is the most significant among the medical diagnostic imaging modalities that have emerged recently.