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

Filtration-Pam09

QuestionAnswer
Define "filtration" The process of removing "undesirable" low energy xray photons via insertion of absorbing materials in the primary beam.
What is another name for filtration? Hardening
What is the only purpose of filtration? To lower the patient's radiation dose
What are the 2 ways filtration is measured? 1. Al/Eq (Aluminum Equivalent) 2. HVL (Half Value Layer)
What is the HVL? The amount of absorbing material that will reduce intensity by 1/2
____ mm Al/Eq is for equipment over 70 kVp 2.5
____mm Al/Eq is for equipment between 50-70 kVp 1.5
____mm Al/Eq is for equipment below 50 kVp 0.5
HVL affects Quality or Quantity? Quality
What 2 areas of radiography use equipment below 50 kVp? 1. Mammography 2. Dental radiography
What are the 4 types of filtration? 1. Inherent 2. Added 3. Total 4. Compensation
What is inherent filtration Filtration that is built into the x ray tube
What 3 items are part of inherent filtration? 1. Glass envelope 2. Di-electric oil 3. Glass window
___mm Al/Eq makes up inherent filtration 0.5-1.0
What material does mammography use for their tube window? As opposed to...? Why? Beryllium, instead of Pyrex. So they don't filter out absorbing rays they need for extra detail.
What is added filtration? Any filtration outside of the tube & housing & before the IR
___mm Al/Eq makes up the collimator 1.0
What type of filtration is the mirror? Added
What is total filtration? Inherent + Added
What is a compensation filter? A device providing a more uniform density
What 4 substance can a compensation filter be made of? 1. Aluminum 2. ClearPb(Lead) 3. Plastic 4. Saline bag
What are 3 examples of when a compensation filter would be used? 1. Foot x-ray 2. T-Spine x-ray 3. Chest x-ray
What is a Wedge filter? A wedge shaped device that gives a uniform density when the part is larger on one side than another
When using a Wedge filter, the ___ end goes over the thinner area of the body part Thicker
When using a Wedge filter, the ___ end goes over the thicker area of the body part. Thinner
What is a Trough? A device that gives a uniform density when the body part is thicker on the edges and thinner in the middle
What is another name for a Trough? Double Wedge
What is an example of when a Trough would be used? Chest x-ray
What must happen to technique when adding a filter? Technique must go up
What happens to density when a filter is introduced? Contrast? Density decreases Contrast decreases
Created by: mornstein
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