Unit 8

Which of the following image receptors is used in dental imaging? (44) A. 70kV B. 110V C. 110kV D. 8mA

110V

When using a dental x-ray unit, the end of the cone should be positioned at ___ inches from the patient's anatomy.

4

What is the typical kilovoltage preset on a dental unit? (50)

70kV

To obtain a lateral projection of the pelvis, which area should be used for measurement?

At the highest level of the trochanter

What caudal landmark is used when obtaining a lateral x-ray of the pelvis?

Border of the ischium

Which of the following are ways to determine if the animal is properly positioned in the lateral view?

Coxofemoral joints are superimposed

To obtain a craniocaudal view of the tibia of a small animal, that patient should be in which of the following positions?

Dorsal Recumbency

The bisecting angle principle states that the plane of an x-ray beam should be 90 degrees to the: A. Long axis of the tooth B. Plane of the film C. Imaginary line that bisects the angle formed by the tooth's long axis and the film plane D. Imaginary line that bisects the angle formed by the animal's head and the film plane

Imaginary line that bisects the angle formed by the tooth's long axis and the film plane

Which of the following is not considered a key radiographic feature of carpal or tarsal bone immaturity? A. Increased calcification B. Increased number of visible vascular canals causing increased porosity C. Abnormally tapered profile D. One or more fringed margins

Increased calcification

To obtain a radiograph of the VD extended hip projection, where is the center of the beam focused?

Midline between the left and right ischial tuberosity

The only dental radiographic view that can be made with a true parallel technique is:

Parallel mandibular view

Which of the following is the correct order to process dental film? (48) A. Passed through the developer, then the fixer, then the wash B. Passed through the fixer, wash, developer, then the wash again C. Passed through the developer, wash, fixer, then the wash again D. Passed through the wash, developer, fixer, and wash again

Passed through the developer, wash, fixer, then the wash again

In dental radiographs, periapical disease appears as a:

Radiolucent area around the apex of the tooth

To obtain a Caudocranial view of the tibia of a small animal, the patient should be in which of the following positions?

Sternal Recumbency

When obtaining a Caudocranial x-ray of the stifle joint, what should be palpated to determine the amount of rotation necessary for an exact Caudocranial projection?

The tibial tuberosity

Dental film should be placed in the mouth with the dimple facing:

Up and pointing rostrally

What is the purpose of the foil backing found on dental x-ray film?

to absorb exiting remnant radiation

You are looking at your dental radiograph and notice that the tooth is elongated. This happened because the beam was perpendicular to the:

tooth