Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
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. Your email address is only used to allow you to reset your password. See 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.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
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

Digital Imaging

Bushong Ch 28

QuestionAnswer
What is spatial resolution? Resolution in space
The ability of an imaging system to resolve and render on the image a small high-contrast object is called? Spatial resolution
Spatial resolution is usually described as? The size of an object that can be viewed.
In medical imaging often times you will here spatial resolution being referred to by the quantity which is? Spatial frequency
True or False. The concept of spatial frequency does not refer to size but to the line pair. True. page 450
True or False. A line pair is a black line on white background. One line pair consists of the black line and the interspace of the same width as the line. True. page 450
Spatial frequency is expressed in what? line pairs per millimeter (lp/mm)
Spatial frequency relates the number of line pairs in a given length, expressed as centimeters or millimeters. True
black on white creates high contrast gray on white creates low contrast
Spatial frequency is an important characteristic that is used to describe? Medical images and medical imaging systems.
When they refer to the quantity of spatial resolution as a whole they are actually talking about spatial frequency. True
As spatial frequency becomes larger, the objects become smaller. True
Large soft tissues such as the liver, kidney, brain have low spatial frequency and are easy to image. Bone trabeculae, breast microcalcifications and contrast filled vessels are considered what type of frequency? high-frequency objects
Created by: Baker RAD 2012
Popular Radiology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards