Like this study set? Create a free account to save it.

Sign up for an account

Already have a Quizlet account? .

Create an account

Air Gap

A space between the patient and the film.


Radiation directed back toward the x-ray tube.


A moving grid.

Coherent Scattering

This type of interaction takes place at relatively low energy levels (below 10 keV) and causes and effect similar to ricochet. Also known as Thompson Scatter.

Compton Effect

The incoming x-ray photon collides with an outer shell electron removing it from the atom.

Crosshatch Grid

A composite of two grids with the lead strips at right angles to each other.

Focal Range

The distance within which the grid will not absorb an undue amount of useful radiation.

Focused Grids

Grids with lead strips aligned to the direction of the diverging primary x-ray beam.


A device placed between the patient and the film.

Grid Cassettes

Special cassettes with a grid built into the front side.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions and try again


Reload the page to try again!


Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

Voice Recording