E
True or False: In panoramic imaging, the image receptor and tube head rotate around the patient.
True
definition: area that can be shown when performing imaging procedures
field of view
definition: image of the teeth and bones made by placing the film or cassette against the face or the head and projecting the xrays from the opposite side
extraoral imaging
which x-ray takes an image of the lateral side of the head and is used for orthodontic treatment planning
Cephalostat/Cephalometric
definition: images taken when large areas of the skull or jaw must be examined
When a patient’s chin is too high during the panoramic exposure:
a “reverse smile line” (frown) will appear on the radiograph
This is an imaginary three-dimensional curved area or space that bears the same shape as a horseshoe.
Focal Trough
The latest panoramic technology is:
digital panoramic imaging
Advantages of panoramic imaging, when contrasted with intraoral imaging, include:
less radiation
less gagging
When a patient’s chin is positioned too low during the panoramic exposure you will see
an joker like (exaggerated) smile
Anterior teeth that appear fat are caused by the:
patient’s teeth positioned too far back on the bite-block
midsagittal plane
The _______ used in the panoramic x-ray machine tube head is a lead plate with an opening shaped like a narrow vertical slit
collimator
The skull view that shows the frontal and ethmoid sinuses, the orbits, and the nasal cavities is the _____ projection.
posteroanterior
The correct position of the Frankfort plane for a diagnostically correct panoramic image is:
parallel to the floor
Scatter radiation is absorbed by the lead strips on the
Grid
A ghost image will appear _____ than normal and on the _____ side of the image.
larger; opposite
Skull radiography is most often used in (2)
oral surgery and orthodontics
The exposure controls allow the _____(2) to be adjusted on the panoramic x-ray unit, to accommodate patients of different sizes.
milliamperage(MA) and kilovoltage (KvP)
Which is most useful in helping the dentist determine the exact location of the mandibular nerve before mandibular third molar extraction surgery or mandibular implant placement?
CBCT
When the patient’s jaws are outside the focal trough, the resulting images are:
blurred
When a dark radiolucent shadow obscures the apices of the maxillary teeth, the
tongue is not in contact with the palate
The quality of the panoramic view depends on focal trough placement of the patient’s:
jaw
A radiopaque cone-shaped artifact on a panoramic image that interferes with the diagnostic information is caused by the:
incorrect lead apron/thyroid collar placement
A patient wearing earrings or glasses while taking a panoramic creates ________ on the image.
ghost images