Save
Upgrade to remove ads
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 5-8

Advanced modalities review week 5-8

QuestionAnswer
At least a _____% change in mAs is necessary to produce a visible change in the image. 30
List the following tissues in order from the most radiolucent to the most radiopaque. Lung fat muscle bone
Both beam quality and beam quantity are increased by Increasing kVp Using a 3-phase generator
Which technique would give the highest patient dose? 65 kVp/300 mA @ 0.1 sec
A _____% increase in kVp may be accompanied by a _______% reduction in mAs to produce the same image receptor response at a slightly reduced contrast scale. 5; 30
The purpose of image subtraction is to enhance contrast. True or False True
A digital display monitor is best viewed ______________. Straight on
The science of ______________ is the study of the response of the human eye to light. photometry
Almost all medical flat panel digital display devices are _______________. monochrome liquid crystal displays (LCDs)
Almost all digital images in medical imaging are viewed and interpreted on a __________________. digital display device
Spatial resolution improves with the use of higher megapixel digital display devices. True or False True
What is the basic photometric unit? Lumen
Visual acuity is highest in the central portion of the retina. True or False True.
The interpretation of a digital medical image by a radiologist is a two-step process; _________________ followed by ______________. global impression; visual search
Photopic vision is used for ______________________. daylight vision
Higher object contrast is required for image perception under high illuminance. True or False False
When light arrives at the retina, it is detected by the __________________. rods and cones
What is the formula for the magnification factor? MF = SID/SOD
Magnification factor = image size/object size. True or False True
The three primary geometric factors affecting image quality are ________________________. magnification, distortion, and focal spot blur
Radiographic image quality is improved when the __________ is increased. source image distance
What is the formula for Radiographic contrast? Image receptor contrast × subject contrast
Subject contrast is affected by ___________. patient thickness
Distortion depends on object thickness. True or False True
_________ is defined as the ability to distinguish anatomical structures of similar subject contrast and visually detect one from the other. Contrast resolution
Distortion depends on tube position. True pr False False
Which of the following is the principal contributor to image noise in radiographic and fluoroscopic imaging procedures? Quantum mottle
Distortion depends on object shape. True or False True
Created by: bmairet
 

 



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