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

radt 465

image aquisition

QuestionAnswer
which IR gets image by photon hitting scintillator> light> CCD> electronic signal CCD / CMOS
negatives of what IR are low light capture, lack of transfer efficiency and spatial resolution, decreased DQE CCD/ CMOS
which IR uses uropium, barium fluorohalide phosphors, CR, workstation PSP
DQE INCREASES SO PATIENT DOSE ________ DECREASES
PHOTO> AMORPHOUS SELENIUM> SILICON> XRAY> LIGHT TFJ> LIGHT A Si> LIGHT TFT
PHOTON > PHOSPHOR LAYER> LASER RELEASES> LIGHT > NORMAL STATE> READER OF LIGHT> DIGITIZER PSP
POSITIVES: HIGH CONTRAST, LIGHT WEIGHT : ___ IR PSP
EI ________ PROPORTIONAL TO EXPOSURE OF IR DIRECTLY
S NUMBER _____- PROPORTIONAL TO EXPOSURE OF IR INVERSELY
ABILITY OF SYSTEM TO DISPLAY CHANGES IN GRAY SCALE VALUES (BIT DEPTH) CONTRAST RESOLUTION
MEASURED IN LP/ MM DETERMINED BY PIXEL SIZE SPATIAL RESOLUTION
CR USES ___________ FOR SPATIAL RESOLUTION SAMPLING FREQUENCY
DR USES _____ FOR SPATIAL RESOLUTION DETECTOR ELEMENT SIZE (DEL)
IODINE STUDIES NEED ______ KVP <80
BARIUM STUDIES USE __________ KVP 100- 125
DOUBLE CONTRAST STUDIES USE ______ KVP 90-100FA
PROCESOR TIME? 90 SEC
FILM STORAGE TEMPERATURE 50-70 DEGREES
PROCESSING TEMPERATURE 90-95 DEGREES
ARTIFACTS THAT OCCUR AFTER EXPOSURE ARE WHAT COLOR BLACK
WHEN PT THICKNESS INCREASES 1 CM WHAT ADJUSTMENT TO KV 2 KVP
PHOTON ENERGY LEVEL IS INVERSELY PROPORTIONAL TO ______ WAVELENGTH
_________ IMAGING HAS SOLID STATE DETECTOR, DIRECT CAPTURE IMAGING SYSTEM, IMMEDIATE IMAGE DISPLAY DR
A HIGH RATIO GRID WILL ABSORB MORE OR LESS SCATTER AND ABSORB MORE OR LESS PRIMARY MORE
DOES FIELD SIZE AFFECT EXPOSURE RATE NO
EXPOSURE RATE DECREASES AS ________ INCREASES SID
SCATTERED RADIATION CAUSES WHAT ON AN X RAY FOG
FACTORS THAT AFFECT CONTRAST KVP, GRIDS, FILTRATION, IMAGING SYSTEM SPEED, ANATOMY AND PATHOLOGY
CONTRAST AND KVP ARE ______ PROPORTIONAL INVERSELY
ANATOMY AND PATHOLOGY _______ PROPORTIONAL TO IMAGE CONTRAST INVERSELY
Created by: schwenk
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