Radiology Test Questions

On a dental radiograph, the lamina dura appears:

A dense radiopaque line that surrounds the root of the tooth

Weak radiation leaving the tube during exposure is prevented by use of a/an:

Aluminum Filter

Which option below, best describes an ion?

An atom that has lost electrons

The area of the mandible where the ramus and body meet is termed:

Angle of the Mandible

You take an image of the maxillary anterior teeth, you see a radiopaque "V" above the roots of the teeth. What landmark is this?

Anterior Nasal Spine

What is the negatively charged particle that is responsible for producing dental radiographs?

Electron

What is the bite-wing technique used to examine?

Examining the interproximal surfaces, Detecting decay, and Examining interproximal crestal bone levels

Nutrient canals are most often seen in the _______ because the bone is typically thin.

Mandibular Anterior

Which of the following mandibular landmarks can be seen on a panoramic image but CANNOT be seen on intraoral images?

Mandibular Condyle

When taking an image of the maxillary molars, you are going to see which of the following landmarks?

Maxillary Sinus

The rounded, radiopaque prominence that extends distal to the maxillary third molars:

Maxillary Tuberosity

The immovable joint that fuses the two maxilla bones and appears radiolucent on a radiograph:

Median Palatal Suture

A small, round radiolucency between apicies of the mandibular premolars:

Mental Foramen

A radiopaque, vertical bony wall that divides the nasal cavity into the right and left portions:

Nasal septum

The styloid process is visible on which type(s) of images?

Panoramic Radiograph

In the bite-wing technique, the receptor is placed __________ to the crowns of both the maxillary and mandibular teeth.

Parallel

The beam of radiation which is responsible for exposing the x-ray film is the:

Primary

When looking at a film, which tooth structure is radiolucent?

Pulp

The term used for a two-dimensional representation of a three-dimensional image:

Radiograph

On a panoramic image, the lip-line appears:

Radiolucent where the lips do not cover the teeth and radiopaque where the lips cover the teeth

The genial tubercles appear _____ on a dental film.

Radiopaque

The J- or U-shaped radiopacity located superior to the maxillary first molars:

Zygomatic Process of the Maxilla

The cathode in the ________________ terminal.

negative

Due to the slight bend in the vertical angulation during the bite-wing technique, what angle is used to compensate?

+10

1. General Radiation 2. Primary Radiation 3. Scatter Radiation 4. Secondary Radiation 5. Character Radiation

1. Produced when an electron hits the nucleus of a tungsten atom 2. Penetrating beam that is produced at the target of the anode 3. The result of an x-ray being deflected from its path 4. Created when the primary beam interacts with matter 5. Produced when a high-speed electron dislodges an inner shell of a tungsten atom

The mandibular canal is a tube-like passageway through bone that houses the inferior alveolar nerve block. It appears as a radiolucent band on which type(s) of films?

Both Intraoral and Panoramic Films

The coronoid process appears as a radiopacity on which type(s) of films:

Both Panoramic and Intraoral Films

Who is credited with the first practical use of radiographs in dentistry?

C. Edmund Kells

The term used to describe the softer, matrix of spongy bone in-between 2 layers of dense bone is:

Cancellous Bone

A person who positions, exposes, and processes dental radiographs is a:

Dental Radiographer

What is the most important use of dental radiographs?

Detection

_________ was the New York dentist that was the first to use film in intraoral radiographs.

Frank Van Woert

Besides gamma rays, what additional radiation wave from the EMR spectrum is considered harmful to tissue due to its wavelength?

Ultra-violet

Which radiology pioneer is known as "the father" of x-rays?

Wilhem Conrad Roentgen

After removing an exposed film from the patient's mouth, the first thing you should do is:

Wipe saliva from film

A beam of energy that has power to penetrate objects and record their shadows is an/a ___________.

X-Ray