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

Week 2

9/17 - Normal Rad

QuestionAnswer
CT is best for? (4 things) 1.Acute spinal or head trauma 2.Detection of small fractures 3.strokes or acute bleeds 4.thoracic and abdominal imaging
MRI is best for? (4 things) 1.Neuro-musculoskeletal imaging 2.marrow pathology 3.articular pathology 4.brain, spinal cord and meninges
When does the cortex show up white? (CT or MRI) CT... (on a MRI the cortex is black)
***What is the easiest way to tell the difference b/w CT and MRI? look at the cortex (CT = cortex is white; MRI = cortex is black)
MRI is best for almost anything, however you should use a CT on what? Use a CT for fractures of small bones, and areas of the chest and abdominal area b/c MRI has big problem with motion
***What is the number one enemy of MRI? Motion
On a MRI what color is considered a high signal? a low signal? high signal = white; low signal = dark
***What are the advantages of a closed magnet MRI, a open magnet MRI, and a stand up magnet MRI? Closed - is simply the best, more homogeneous and higher magnification. Use a open magnet for children and those who are claustrophobic. Use a stand up magnet if you want to see a piece of anatomy in a certain position.
What are coils on a MRI? they are basically antennas that capture info and send it to the computer
Imaging Voxel...hmmm I didn't really understand what in the world he was trying to say with this. ***However???? Bigger the cube = Larger Signal BUT less resolution...Smaller cubes = smaller signal, BUT more resolution. You need a mixture of both
***Contrast or Not? When should you use contrast? Contrast will show all the inflammed areas. If you suspect a tumor or infection use conrast.
What is the name of the chemical used as contrast? Gadolinium-diethylenetriamine pentaacetic acid (Gd-DTPA)....Duh - its a paramagnetic compound
***Can contrast be evaluated on T1 or T2 images? Contrast can ONLY be evaluated on T1 b/c it has similar properties as fat.
Created by: pcc Normal Rad
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