100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
NBDHE Practice Questions with complete solutions 2024_2025. $10.99   Add to cart

Exam (elaborations)

NBDHE Practice Questions with complete solutions 2024_2025.

 6 views  0 purchase
  • Course
  • NBDHE
  • Institution
  • NBDHE

The x-ray was discovered by a. Heinrich Geissler b. Wilhelm Roentgen c. Johann Hittorf d. William Crookes Wilhelm Roentgen Which discovery was the precursor to the discovery of x-rays? A. Beta particles B. Alpha particles C. Cathode rays D. Radioactive materials Cathode rays ...

[Show more]

Preview 4 out of 56  pages

  • September 10, 2024
  • 56
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NBDHE
  • NBDHE
avatar-seller
tuition
NBDHE Practice Questions with complete
solutions 2024/2025




The x-ray was discovered by
a. Heinrich Geissler
b. Wilhelm Roentgen
c. Johann Hittorf
d. William Crookes - ANSWER- Wilhelm Roentgen

Which discovery was the precursor to the discovery of x-rays?
A. Beta particles
B. Alpha particles
C. Cathode rays
D. Radioactive materials - ANSWER- Cathode rays

Which term describes two or more atoms that are joined by a chemical bond?
a. ion
b. ion pair
c. molecule
d. proton - ANSWER- Molecule

Which is not a type of particulate radiation?
A. Alpha particles
B. Beta particles
C. Protons
D. Nucleons - ANSWER- Nucleons

Which is the location where x-rays are produced?
A. Positive cathode
B. Positive anode
C. Negative cathode

,D. Negative anode - ANSWER- Positive anode

Which describes scatter radiation?
A. Radiation that exits the tubehead
B. Radiation that is more penetrating than primary radiation
C. Radiation that has been deflected from its path by interaction with matter
D. none of the above - ANSWER- Radiation that has been deflected from its path
by interaction with matter

In dental imaging, the quality of the x ray beam is controlled by?
a. kilovoltage
b. miliamperage
c. exposure time
d. source-to-receptor distance - ANSWER- Kilovoltage

Increasing milliamperage results in an increase in:
A. Temperature of filament
B. Mean energy of beam
C. Number of x-rays produced
D. Both A & C - ANSWER- Temperature of filament and number of x-rays
produced

The overall blackness or darkness of an image is termed
a. contrast
b. density
c. overexposure
d. polychromatic - ANSWER- Density

If the target receptor distance is doubled, the resultant beam will be
a. four times as intense
b. twice as intense
c. half as intense
d. one fourth as intense - ANSWER- One fourth as intense

The latent period in radiation biology is the time between
a. initial injury and repair
b. subsequent doses of radiation
c. cell rest and cell mitosis
d. exposure to x-radiation and clinical symptoms - ANSWER- Exposure to x
radiation and clinical symptoms

,Which factor(s) contributes to radiation injury?
A. Total dose
B. Dose rate
C. Cell sensitivity
D. Age
E. All of the above - ANSWER- All of the above

The traditional unit for measuring x-ray exposure in air is termed
a. gray
b. coulombs per kilogram
c. rem
d. rad
e. roentgen - ANSWER- Roentgen

Which is considered radioresistant?
A. Immature reproductive cells
B. Young bone cells
C. Mature bone cells
D. Epithelial cells
E. None of the above - ANSWER- Mature bone cells

Which position indicating device is most effective in reducing patient exposure?
A. Conical
B. Rectangular
C. Circular
D. all are equally effective in reducing patient exposure - ANSWER- Rectangular

Which statement describes the function of a filter in a dental x-ray tube head?
A. It reduces the size and shape of the beam
B. It removes low energy x rays
C. It removes the dose of radiation to the thyroid gland
D. It decreases the mean energy of the beam - ANSWER- It removes low energy x
rays

The dental radiographer can regulate the x ray beam (kVp, mA, time) through the
use of the
a. control panel
b. extension arm
c. console
d. position-indicating device (PID) - ANSWER- Control panel

, One advantage of a film with an emulsion coating on both sides (double-emulsion
film) is that
a. the film requires less radiation exposure to make an image
b. the image produced is less distorted
c. the film has less sensitivity to radiation
d. processing solutions are absorbed more easily - ANSWER- The film requires
less radiation exposure to make an image

The intensifying screen that emits green light and must be used with green
sensitive film is termed
a. calcium tungstate
b. rare earth
c. phosphor
d. rare tungstate - ANSWER- Rare earth

A dental image that demonstrates many shades of gray is said to have
a. high contrast
b. low contrast
c. high density
d. low density - ANSWER- Low contrast

The hydroquinone in the developer brings out the _____ tones, whereas the Elon
in the developer bring out the _____ tones on a dental radiograph.
a. black; white
b. white; black
c. gray; gray
d. white; gray
e. black; gray - ANSWER- Black; gray

A universal safelight filter such as the GBX-2 by the Carestream Health is
recommended for
a. intraoral films only
b. extraoral screen films only
c. extraoral nonscreen films only
d. intraoral and extraoral films - ANSWER- Intraoral and extraoral films

Which describes the relationship between the receptor and the long axis of the
tooth in the paralleling technique?
A. The receptor and the tooth are parallel to each other
B. The receptor and the tooth are at right angles to each other
C. The receptor and the tooth are perpendicular to each other

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller tuition. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $10.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79271 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$10.99
  • (0)
  Add to cart