Advertisement Upgrade to remove ads

dental radiology

Systeme internationale units

Coulombs per kilogram (C/kg), Gray (Gy), Sievert (Sv)

Traditional units

Roentgen (R), Rad (radiation absorbed dose), Rem (roentgen equivalent man)

Kilovolt peak (kVp)

controls the penetrating power of electrons and quality

Milliampere (mA)

determines the amount of free electrons; quantity of electrons

Volt

electrical pressure between two electrical charges

Ampere

quanity of electric current

Cathode

negative electrode(everything starts here)

Anode

positive electrode

Radiolucent

portion of the image that is dark or black

Radiopaque

portion of the image that is light or white

Density

degree of darkness or image blackening and is controled by milliamperage

Short-scale contrast

fewer shades of gray and more black against white

Long-scale contrast

density differences between adjacent areas are small and there are many shades of gray

Radiographic contrast

visible difference between densities

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 above and try again

Example:

Reload the page to try again!

Reload

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

NEW! Voice Recording

Create Set