Radiology Exam Study Guide: Ch. 39 & Ch. 40

Consumer Patient Radiation Health and Safety Act requires:

1. All persons who take x-rays to be professionally TRAINED and CERTIFIED.

Quality control for a dark room includes:

1. Checking for light leaks every six months, 2. Safelight inspection, 3. Equipment testing

The order for processing films is:

1. Developer, 2. Rinse, 3. Fix, 4. Wash

If a patient refuses dental x-rays, the dental assistant should:

1. Explain to the patient the importance of having x-rays, 2. Document in the patient chart that patient refused x-rays.

Dental Records must contain what information on dental images:

1. Number of images, 2. Type of image, 3. quality of image

Before obtaining informed consent for x-rays, the patient must be informed of:

1. Risks and benefits, 2. Credential of the person taking the x-rays, 3. The consequences of not having x-rays

Distance from the safelight and unwrapped films should be at least:

4 feet

The ideal time and temperature for manual developing is:

5 minutes at 68 degrees

If x-ray films are processed in solutions out of order, the films will appear:

Clear

If the film is lighter than normal, what is wrong with the developer?

Developer is too weak

The difference between extraoral and intraoral film is:

Extraoral film is more sensitive to light

On the film, size of the silver bromide crystals affects:

Film speed

During the order of processing the films in the solutions, the "fixer" does what to the film?

Hardens the film emulsion

What will a larger focal spot provide?

Improvement in sharpness of the image

An extraoral film must be loaded in a cassette where:

In a darkroom or daylight loader

If old, exhausted developer is continually used and not changed the films will appear:

Light

Disclosure

Means to inform the patient about the purpose and nature of x-rays (dental images).

Most commonly used film size for adults

Size 2

The lead foil in the film packet provides:

a shield to the film from backscatter radiation; reduces fog

The white (tube side) of the film packet will face:

toward the tube; raised dot to the occlusal/incisal (dot in the slot).

Reticulation film emulsion will occur when:

Sudden temperature difference between developer and water bath

Dental x-rays are the property of:

The dentist

The most critical component in film processing quality control is:

To maintain the freshness of the processing solutions

PSPs (phosphor storage plates) should be transferred from clinic to scanner by putting them in:

a paper or plastic cup

Developing solution for an automatic processor in normally 81 - 83 degrees F. If the developing solution becomes any hotter, how will the film appear?

dark or black

Contaminated films removed from the mouth must be handled while using/wearing:

exam gloves

When radiographs are mounted, the raised dot is placed facing:

facing up (pimple, not dimple)

F-speed film

newest and fasted film

Latent image

occurs when x-ray energy interacts with film emulsion

According to the CDC digital sensors

should use FDA-cleared barriers

Size film for a pediatric (child) patient is:

size 0

Drying PSP (phosphor storage plates) can be achieved by:

wiping with a cotton gauze or tissue after removing from the patients mouth and placing in a disposable cup.