Medical Radiography Quiz Questions

121 Questions | By Sarahann325 | Updated: Mar 22, 2022 | Attempts: 968

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Let's start this quiz it will give you the different functions of medical radiography. Find out now how much do you know about it!

Questions and Answers

1.

A dental assistant may expose radiographs
- A.
  
  If the dentist gives permission
- B.
  
  If he or she is a certified dental assistant
- C.
  
  If it is permissible in the state he or she is employed
- D.
  
  If he or she is supervised by the dentist or hygenist
2.

The most sensitive cells to ionizing radiation are
- A.
  
  Bone cells
- B.
  
  Muscle cells
- C.
  
  Nerve cells
- D.
  
  Reproductive cells
3.

The best type of xray to penetrate body tissue is
- A.
  
  Low frequency
- B.
  
  Hard rays, short wavelengths
- C.
  
  Long wavelength
- D.
  
  Soft rays, long wavelengths
4.

Xrays are made up of
- A.
  
  Electrons
- B.
  
  Protons
- C.
  
  Photons
- D.
  
  Neutrons
5.

The cathode is a filament composed of
- A.
  
  Tungsten
- B.
  
  Silver
- C.
  
  Copper
- D.
  
  Aluminum
6.

Milliamperage controls
- A.
  
  The speed with which electrons move from cathode to anode
- B.
  
  Cooling of the anode
- C.
  
  Heating of the anode
- D.
  
  Heating of the cathode
7.

Collimation of the primary beam
- A.
  
  Decreases the exposure time
- B.
  
  Restricts the size and shape of the xray beam
- C.
  
  Makes the primary beam more difficult to connect
- D.
  
  Dictates the contrast of the final radiograph
8.

The lead diaphragm determines the size and shape of the
- A.
  
  Electron cloud
- B.
  
  Film used
- C.
  
  Xray beam
- D.
  
  Filament
9.

The portion of the target that is struck by electrons is called the
- A.
  
  Focal spot
- B.
  
  Photon point
- C.
  
  Principle point
- D.
  
  End point
10.

Proper collimation for the film size and target-film distance will
- A.
  
  Increase the wavelength
- B.
  
  Decrease the wavelength
- C.
  
  Increase the kvp
- D.
  
  Decrease radiation recieved by the patient
11.

To increase the penetrating power of an xray beam, the auxiliary must
- A.
  
  Increase KvP
- B.
  
  Decrease KvP
- C.
  
  Increase mA
- D.
  
  Increase FFD
12.

The xray at the center of the xray beam is called the
- A.
  
  Photon ray
- B.
  
  Central ray
- C.
  
  Secondary beam
- D.
  
  Restricted beam
13.

The housing of the xray tube is
- A.
  
  Copper
- B.
  
  Plastic
- C.
  
  Tungsten
- D.
  
  Glass
14.

Filtration of the xray beam protects the patient by
- A.
  
  Eliminating all radiation from the xray head
- B.
  
  Eliminating weak wavelength xrays from the xray beam
- C.
  
  Eliminating short wavelength xrays form xray beam
- D.
  
  Decreasing exposure time
15.

The size of the collimated beam for intraoral radiology measured at the patients skin is
- A.
  
  1.5 - 1.75 inches
- B.
  
  2.0 - 2.25 inches
- C.
  
  2.75 - 3.0 inches
- D.
  
  3.25- 3.5 inches
16.

Scatter radiation is a type of
- A.
  
  Secondary radiation
- B.
  
  Primary radiation
- C.
  
  Stray radiation
- D.
  
  Filtered radiation
17.

The quality, or penetrating power, of secondary radiation is
- A.
  
  More than that of primary radiation
- B.
  
  Less than that of primary radiation
- C.
  
  The same as that of primary radiation
- D.
  
  Unrelated to that of primary radiation
18.

The first sign of xray dermatitus is
- A.
  
  Alopecia
- B.
  
  Erythema
- C.
  
  Dry skin
- D.
  
  Pain
19.

The time period between the effects of cumulative radiation and visible tissue damage is the
- A.
  
  Short-term period
- B.
  
  Acute effect period
- C.
  
  Latent period
- D.
  
  Long-term period
20.

The amount of radiation a person recieves
- A.
  
  Begins anew each day
- B.
  
  Is cumulative only on the skin
- C.
  
  Is cumulative in the entire body
- D.
  
  Is not harmful in small doses
21.

Maximum protection of the patient requires that the xray beam pass through a
- A.
  
  Shielded open-ended cone
- B.
  
  Plastic close-ended cone
- C.
  
  Shielded closed- ended cone
- D.
  
  Lead apron
22.

A technique used to measure the operators exposure to radiation is
- A.
  
  To check the color of the operators finger nail
- B.
  
  For the operator to wear a radiation film badge
- C.
  
  To multiply the number of films the operator has exposed by 0.1 rem
- D.
  
  To count the number of full mouth xray taken
23.

Accumulated radiation dosage for those who work with radiation may not exceed
- A.
  
  0.1 rem/week
- B.
  
  1 rem/week
- C.
  
  10 rem/week
- D.
  
  100 rem/week
24.

The operator must avoid all of the following EXCEPT
- A.
  
  Stray radiation
- B.
  
  Secondary radiation
- C.
  
  Primary beam
- D.
  
  Natural sunlight
25.

To avoid exposure to secondary radiation, the operator should stand
- A.
  
  At least 6 feet from xray head
- B.
  
  2 feet to the right of primary beam
- C.
  
  Any distance in back of xray head
- D.
  
  4 feet in front of the patient