Radilogy Quizzes

X-rays and visible light are both forms of electromagnetic radiation. Compared to visible light photons, X-rays photons have a lower what? • energy -frequency • wavelength

In a dental X-ray tube what metal is used for the focusing cup?

During a dental radiograph exposure, what is the primary type of interaction happening in the patient between the X-ray photons and the outer shell electrons.

Which of these is measured in grays? Absorbed dose Effective dose Equalvent dose

What type of radiation effects are we concerned about in dental radiography

What is the most common mechanism by which X-ray photons cause carcinogenesis

What model do use to estimate the risk of stochastic effect

If you have a panoramic radiograph taken, you are more likely to die from that than you are to winning the euro millions with 100 lottery tickets

If a person standing 2mm from an X-ray source receives an equivalent dose of 20uSv, how many microsieverts will they receive if they stand 4m away

At least how far away should you be from the X-ray source and patient when radiographing

You should never take routine dental radiographs of a pregnant patient in her first trimester? True or false

Based on UK averages, what is the source of roughly half of our annual ionising radiation • cosmic rays • radon gas • medical exposures • injested food

What should the ‘ focus to skin distance’ be for a dental X-ray unit ( operating >60kv)

If there has been under exposure of the film what effect will this have on the image

If the developer solution has been too warm or concentrated what effect will. It have on the image

If the developer is too old, passed its expiration date what kind of image will this result in

If the film gets left in the solution for too ling what kind of image will this results in

If there is inadequate fixation of the film what will this result in

If the film is exposed to visible light before processing what will happen

The processed film appear greenish and browns over time what has happened here?

Which of the following can affect digital radiographs? - exposure issues - developing issues - fixation issues - washing issues - none of the above

Which of the following are suitable methods of viewing film images - against a computer monitor -against a window - on. A light box - towards a ceiling. Light - all of the above

For conventional cephalogram units why is there a relatively large distance (1.5m+) between the X-ray source and the receptor?

In a cephalogram the X-ray beam is perpendicular to the receptor and which facial plane