RHS Practice Exam | 178 Questions with 100% Correct Answers

RHS Practice Exam

A screen film is more sensitive to fluorescent light than to direct exposure to x-rays. T/F

- ✔✔True

Increasing exposure time will cause what to the film? - ✔✔Increase in density; image

appears darker

Velocity is the speed of a wave. T/F - ✔✔False

What do the letters XCP stand for? - ✔✔Extension Cone Paralleling

Film fogging results from improper safe lighting. T/F - ✔✔True

At 68 degrees Fahrenheit, what is the optimal development time for manual film

processing? - ✔✔5 minutes

What does the term ALARA mean? - ✔✔As Low As Reasonably Achievable

What describes the term of radiation that the body can endure with little or no chance of

injury? - ✔✔Maximum permissible dose

The film characteristic that is "the amount of radiation needed to produce a radiograph

of standard density" is? - ✔✔Speed

X-radiation is not harmful to living tissues. T/F - ✔✔False

Increasing which of the four exposure controls will increase the intensity of the x-ray

beam:

1. Kilovoltage

2. Miliamperage

3. Exposure Time

4. Source to source distance - ✔✔1, 2, 3 and 4

Why is a replenisher added to the processing solution? - ✔✔1. Compensate for loss in

volume of fluids

2. Ensure uniform results between solution changes

3. Compensate for oxidation

How often should the processing tank be cleaned? - ✔✔Whenever the solutions are

changed.

Increasing miliamperage alone will cause an image to come out with what? -

✔✔Decreased density

What is the term for 70% of all x-ray energy produced at the anode? - ✔✔General

radiation

What are four radioresistant cells? - ✔✔Muscle tissue, nerve tissue, mature bone,

salivary gland

When does Direct Radiation occur? - ✔✔When x-rays hit critical targets within a cell

What stage is the film emulsion hardened? - ✔✔Fixation

What is an advantage of a film with emulsion on both sides? - ✔✔The film requires less

radiation exposure to make an image.

What is the most effective method of reducing patient exposure to radiation? - ✔✔Fast

films

How is the patients head positioned before exposing receptors? - ✔✔Maxillary arch

parallel to the floor and midsaggital plane perpendicular to the floor.

What is Target Surface Distance (TSD)? - ✔✔Distance from the source of radiation to

the patients skin.

Which act requires education and certification of persons using radiographic

equipment? - ✔✔Consumer patient radiation health and safety act.

What term describes two or more atoms that are joined by a chemical bond? -

✔✔Molecule

Increasing miliamperage results in an increase in what? - ✔✔Number of x-rays

produced.

Geometric characteristics that refer to a radiographic image that appears larger than its

actual size is known as what? - ✔✔Magnification

What does too little vertical angulation results in for x-ray images? - ✔✔Elongation

The dental radiographer may hold the receptor in a patient's mouth to ensure diagnostic

images. T/F - ✔✔False

What is a processor housing used for? - ✔✔Encasing component parts of automatic

processors.

What is the film/feed slot? - ✔✔Opening used to feed films.