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

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.

Question

Multiple numeric values divided into an array of small elements capable of being processed is the definition of _____ images.
click to flip
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't know

Question

The continuous and varying levels of brightness and colors describe _____ images.
Remaining cards (24)
Know
0:01
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

PACS Chapter 2

Quiz

QuestionAnswer
Multiple numeric values divided into an array of small elements capable of being processed is the definition of _____ images. Digital
The continuous and varying levels of brightness and colors describe _____ images. Analog
Critical characteristics of a digital image include all of the following except a. dose efficiency of the receptor. c. noise efficiency. b. contrast resolution. d. sample resolution. sample resolution.
Changing the matrix and the FOV will not change the size of the pixel. T or F False
Each square in a matrix is called a picture element
The number of bits per pixel is known as bit Depth
If a pixel has a bit depth of 2 to the 9th, the number of gray tones that pixel can produce is 512
The size of the pixel is determined by the matrix
Exposure index refers to the amount of exposure to the patient. T or F False
The measurement for radiation that was incident on the image receptor for a particular exposure is known as Kind
Deviation index is the difference between _____ and _____ expressed in logarithmic fashion. actual exposure (KIND); target exposure (KTGT)
Factors that can adversely affect the pixel values expressed in the deviation index include all of the following except failure of the system to recognize the exposure indicator.
How dark or light a digital image appears on a display monitor is known as brightness
The ability of a digital system to display subtle changes in shades of gray is called contrast resolution.
The ability of an imaging system to demonstrate small details of an object is known as spatial resolution
"The sum of the components in a recording system cannot be greater than the system as a whole" is a definition of modulation transfer function (MTF).
A perfect image processing system would have an MTF of 100%
The more light spread, the ______ the MTF. Lower
The range of exposure values the image detector is able to produce is known as latitude
The efficiency of a system to convert x-ray input signal into a useful output image is known as detective quantum efficiency.
Air kerma is the measurement of radiation energy absorbed in a unit of air. T or F True
The reflection of ambient light can be problematic with monochromatic monitors. T or F True
MTF is a way to quantify the contribution of each system component and the component's overall efficiency. T or F False
It is possible to achieve an MTF of 100%. T or F False
A system's ability to respond to varying levels of exposure, resulting in more detail, is referred to as Dynamic range
Created by: 2304598396295915
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