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Module 2 Dentistry

Extraoral Imaging

TermDefinition
Cephalostat Special device that allows the operator to easily position both film and patient.
Computed Tomography Radiographic technique that produces images or “slices” of one layer or section of the specific areas. Also referred to as computed axial tomography (CAT scan).
Cone Beam Computed Tomography A three-dimensional digital imaging method that uses a cone-shaped beam of radiation that rotates around the patient.
Digital Panoramic Unit A filmless method of recording a panoramic image and displaying it by using an electronic sensor and a computer to process and store the image.
Exposure Controls Feature that allows the operator to adjust the milliamperage and kilovoltage settings.
Extraoral Images Images taken when large areas of the skull or jaw must be examined.
Extraoral Imaging An image of the teeth and bones made by placing the film or cassette against the face or the head and projecting the x-rays from the opposite side.
Field of View The area that can be shown when performing imaging procedures.
Focal Trough Imaginary three-dimensional horseshoe-shaped zone used to focus panoramic radiographs.
Frankfort Plane Imaginary plane that passes through the top of the ear canal and the bottom of the eye socket.
Midsagittal Plane Imaginary line that divides the patient’s face into right and left sides.
Temporomandibular Joint Joint on each side of the head that allows movement of the mandible.
Three-Dimensional Digital Imaging An image that demonstrates the anatomy in three dimensions.
Created by: Christopher Mora
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