Radiation Health And Safety Review

83 Questions | By Missksheetz | Updated: Mar 20, 2022 | Attempts: 476

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Quiz to help students study for the RHS Exam.

Questions and Answers

1.

_______ regulate(s) the manufacture and installation of dental x-ray equipment.
- A.
  
  The federal government
- B.
  
  State government
- C.
  
  Local government
2.

The position indicating device (PID) is extension of the:
- A.
  
  Tubehead
- B.
  
  Extension Arm
- C.
  
  Control Panel
3.

The _______ allows for positioning of the tubehead.
- A.
  
  Control devices
- B.
  
  Extension arm
- C.
  
  Control panel
4.

The _____ activate(s) the machine to produce x-rays.
- A.
  
  On-off switch
- B.
  
  Exposure button
- C.
  
  Exposure light
5.

During an exposure:
- A.
  
  The exposure button is briefly depressed and then released to initiate the exposure
- B.
  
  The exposure button is firmly depressed until the preset exposure time is completed.
- C.
  
  The exposure light on control panel is illuminated to signal the completion of the exposure.
6.

Which of the following statements is true of the film holder?
- A.
  
  It is used to align an extraoral dental x-ray film.
- B.
  
  It requires the patient to stabilize the film in the mount
- C.
  
  It is required when using the intraoral paralleling technique.
7.

A _______ eliminates the need for the patient to stabilize the film.
- A.
  
  PID
- B.
  
  Film holder
- C.
  
  Control panel
8.

Which of the following intraoral film holders is a disposable Styrofoam bite-block?
- A.
  
  EEZEE-Grip
- B.
  
  Stable bite-block
- C.
  
  EndoRay
9.

Features of the Stable bite-block include:
- A.
  
  Disposable
- B.
  
  Slot for film retention
- C.
  
  Molded plastic that can be sterilized
- D.
  
  Both a & b
10.

Which of the following are beam alignment devices?
- A.
  
  XCP bite-block
- B.
  
  EEZEE-Grip
- C.
  
  Precision film holders
11.

A beam alignment device can be used to help the dental radiographer position the PID in relation to the ______ and film.
- A.
  
  Collimator
- B.
  
  Tooth
- C.
  
  Extension arm
12.

The Rinn XCP system includes a:
- A.
  
  Beam alignment device
- B.
  
  Snap-on metal collimating device
- C.
  
  Styrofoam bite-block
- D.
  
  Both a & b
13.

Which of the following statements is true regarding the dental x-ray film and formation of the latent image?
- A.
  
  The film is placed to the buccal of the teeth
- B.
  
  The film is placed to the lingual of the teeth
- C.
  
  A periapical film is an extraoral film
14.

Which component of the x-ray film provides a stable support for the emulsion?
- A.
  
  Film base
- B.
  
  Adhesive layer
- C.
  
  Gelatin
15.

The film base is a flexible piece of:
- A.
  
  Cardboard
- B.
  
  Acetate
- C.
  
  Polyester plastic
16.

The film base is transparent with a slight ______ tint used to emphasize image quality.
- A.
  
  Amber
- B.
  
  Red
- C.
  
  Blue
17.

The film base is _____ mm thick
- A.
  
  0.02
- B.
  
  0.2
- C.
  
  2.0
18.

The adhesive layer is added to the ____ before the ____ is applied.
- A.
  
  Gelatin; halide crystals
- B.
  
  Halide crystals; gelatin
- C.
  
  Film base; emulsion
- D.
  
  Emulsion; film base
19.

The film emulsion is:
- A.
  
  Attached to both sides of the film
- B.
  
  Attached to one side of the film
- C.
  
  Made of polyester plastic
20.

The film emulsion is composed of homogenous mixture of:
- A.
  
  Calcium tungstate and lead salt crystal
- B.
  
  Gelatin and barium salt crystals
- C.
  
  Gelatin and silver halide crystals
21.

The halide in dental x-ray film is primarily silver:
- A.
  
  Iodide
- B.
  
  Bromide
- C.
  
  Chloride
22.

The latent image is stored by the ________ in dental x-ray film.
- A.
  
  Film base
- B.
  
  Adhesive layer
- C.
  
  Silver halide crystals
23.

The invisible pattern of stored energy on the exposed film is called the:
- A.
  
  Latent image
- B.
  
  Variable density pattern
- C.
  
  X-ray photon
24.

Latent image centers are aggregates of:
- A.
  
  Neutral silver atoms
- B.
  
  Bromine atoms
- C.
  
  Silver bromide crystals
25.

During formation of the latent image, irregularities in the lattice structure of the exposed crystal, known as _______, attract silver atoms.
- A.
  
  The protective layer
- B.
  
  The emulsion
- C.
  
  Sensitivity specks