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

radiology key terms

key terms for radiology

TermDefinition
ALARA As Low As Reasonably Achievable, a program in place by the National Committee of Radiation Protection to ensure radiation exposure is low.
Annular Array Arranges the crystals in concentrating rings by using electricity
Anechoic Used to describe tissues that transmits all the sound through to deeper tissues reflecting none of the sound back to the transducer
Anode contains a rotating tungsten target wherein x-rays are generated at focal spot
Bucky puts the grid in motion as the x-rays are generated blurring the white grid lines on the radiograph
Cathode contains a tungsten filament at which the electrons are generated when heated
Collimators A device on an x-ray machine used to restrict the x-ray beam to reduce scatter
Contrast Defined as the differences in radiographic density between adjacent areas on a radiographic image
Direct Exposure Film More sensitive to direct x-rays than to light
Distance Enhancement occurs when the sound beam transverses a cystic structure
Echoic Most of the sound is is reflected back to the transducer
Film Latitude Inherents the ability to produce shades of gray
Film-Focal Distance Distance between the source of the x-ray and the film
Fluoroscopy Used for those patients for whom the visualization of dynamic structures
Focused Grids the lead stripes placed at progressively increasing angles to match the divergence of the x-ray beam
Heel Effect the result of unequal distribution of the x-ray beam intensity emitted from the x-ray tube along the cahtode-anode axis
Hyperchoic A structure in an ultrasound image that appears bright or white compared with adjacent structures
Hypoechoic Used to describe tissues that reflect reflect less sound back to the transducer than surrounding tissues
Intensifying Screens plates in the x-ray cassette composed of phosphorescent crystals that function to emit light
Isoechoic Used to describe tissue that appears to have the same echotexture on the screen as surrounding tissues
Kilovoltage Peak (kVp) the maximum voltage applied across an x-ray tube that determines the energy of the electrons produced
Latent Image The invisible image emulsion of an x-ray film produced after the film has been exposed to light
Maximum Permissible Dose (MPD) A quality factor figured in to determine the dose
Milliamperage (mA) exposure time in seconds, controls the number of electrons in the electron cloud generated at the filament of the cathode.
Mirror Image Creates the illusion of the liver on the thoracic side of the diaphragm or the appearance of a second heart beyond the lung interface
Object Film Distance (OFD) The distance from the object being imaged to the recording surface
Penumbra effect Causes a loss of detail and results in collimeter
Radiographic Density The degree of blackness on a radiograph
Radiolucent Air or lung tissue will appear black (radiolucent) because it allows more of the radiation to pass through.
Radiopaque With increasing density, the tissue will appear whiter (radiopaque) as it absorbs more of the radiation
Rem Units used to express the dose equivalent that results from exposue to ionizing radiation
Sievert (SV) the current terminology used to define a rem
Slice Thickness Occurs when the transducer receives echoes with different amplitudes from the same area at the same depth
Sonolucent Most of the sound is transmitted to the deeper tissues, with only a few echoes reflected back to the transducer
Source Image Distance (SID) The distance from the target to the recording surface
Ultrasonography A noninvasive method of imaging soft tissues
Created by: LizRiha
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