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Extraoral Imaging
Extraoral Imaging Vocabulary
Term | Definition |
---|---|
Cephalostat | Special device that allows the operator to easily position both film and patient. |
Computed tomography (toe-MOG-ruh-fee) (CT) | 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 (CBCT) | A three-dimensional digital imaging method that uses a cone-shaped beam of radiation that rotates around the patient. |
Digital panoramic units | 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. |