Digital Imaging
Digital radiography requires less radiation than traditional radiography because the:
Sensor is more sensitive to radiation
Panoramic imaging allows the dentist to:
View the entire dentition and surrounding structures on one image.
The tube head rotates around ___ the patient's head during exposure.
behind
When the patient's jaws are outside of the focal trough, the resulting images are:
The skull view that shows the bones of the face and skull and the soft tissue profile is the ___ projection.
Lateral cephalometric
Which category of digital imaging uses a sensor with a cord that is attached to the computer?
Direct Digital Imaging
In panoramic imaging, the ___ and ___ rotate around the patient.
Sensor; tubehead
Each panoramic unit has a(n) ___ that is used to align the patient's teeth as accurately as possible.
Head positioner
cervical spine
Skull radiology is most often used in:
Oral surgery and orthodontics
The CCD found in direct digital imaging sensors is made of:
Silicon
The ___ used in the panoramic x-ray machine is a lead plate with an opening shaped like a narrow vertical slit.
Collimator
A patient wearing earrings or glasses must remove them before panoramic x-ray image exposure; otherwise, a ___ will appear on the image.
Ghost image and blurred area
If the patient's teeth are not positioned in the groove of the bite-block but anterior to the groove, the teeth will appear ___.
"skinny"
Which projection is useful in the examination of a fracture in the ramus of the mandible?
Reverse towne
In the aspect of infection control, the PSP plates are a major source of:
Cross-contamination
The focal trough is an imaginary 3-dimensional curved area or space, shaped like a:
Horseshoe
The correct position of the Frankfort plane for a diagnostically correct panoramic image is:
If the patient's chin is too high during the panoramic exposure, a ___ will appear on the image.
reverse smile line
Which extraoral projection is best for the evaluation of growth and development?
Lateral cephalometric
Transporting PSP sensors should be done by placing them in:
A black transfer box
Advantages of panoramic imaging, when contrasted with intraoral imaging, include:
less radiation exposure
A ___ results when an anatomic structure that is located behind the moving rotational center is penetrated twice by the x-ray beam.
double image
A dark radiolucent shadow that obscures the anterior teeth can indicate that the patient's _______ during the exposure.
lips were not closed on the biteblock
Which projection is best for examination of the maxillary sinus?
Waters