Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Comp Questions

Density The overall Darkness of the Image - Film
Brightness The overall Brightness of the image - Digital
Receptor Exposure The Amount of Radiation that actually hit the Imaging Plate
High Contrast Short Scale; Narrow Window Width; black, white and a few shades of gray
Low Contrast Long Scale; Wide Window Width; lots of shades of gray
Filtration Filters out low energy beams that only add to dose and do not effect the image.
Latitude The amount of error that can be made and still result in a quality image
ALARA As Low As Reasonably Achievable
Law of Reciprocity mA * Seconds = mAs; as long as the mAs is the same the density / brightness will be the same
Attenuation reduction in the energy of the beam caused by: absorption and scatter
Leakage Radiation x-rays that escape the protective tube housing
Off-Focus Radiation x-rays emitted from parts of the tube other than the focal spot
Back Scatter Photons that scatter after transmission and are deflected backward toward the imaging plate
Exit Radiation x-rays that pass through the part and reach the imaging plate to create the image
Primary Radiation x-ray beam after it leaves the tube and before it reaches the object
Remnant Radiation radiation that passes through the patient
Penumbra the unsharp edge / shadow surrounding the edge of the image
Created by: BPalmquist