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

Imaging Terminology

Imaging Terminology -D

TermDefinition
Anechoic Region which is free from echoes (black).
Anisotropy An ultrasound artifact, notably in muscles and tendons, which causes the echogenicity of a structure changes when the transducer is angled obliquely.
Artifacts False features in the image produced by the imaging process.
Attenuation The change in a beam of radiation or sound wave as it passes through matter. The intensity of the beam or sound wave decreases as its depth of penetration increases.
Contrast Degree of difference between the light and dark areas.
Contrast Medium Agent that enhances differences between anatomic structures.
CT Scan Advanced X-ray technology that produces a sequence of detailed cross-sectional 3-D images of the body.
Discography (discogram) An interventional diagnostic test used to help identify the source of back pain and to guide the treatment of abnormal discs.
Dosimeter Instrument that detects and measures exposure to ionizing radiation.
Echogenicity The capacity of a structure in the path of an ultrasound beam to reflect back soundwaves. The specific terminology is used to describe the characteristics of images in ultrasound.
Echoic Refers to echo.
Gain Measure of the strength of the ultrasound signal; overall gain amplifies all signals by a constant factor regardless of the depth.
Gradient Field Variation of the strength of the magnetic field over a specific period of time measured in Tesla per second or T/sec.
Hyperechoic Region in an ultrasound image in which the echoes are stronger (whiter) than normal or than surrounding structures.
Hypoechoic Region in an ultrasound image in which the echoes are weaker (darker) than normal or in the surrounding regions.
Image Intensifier An electronic device used to produce a fluoroscopic image with a low-radiation exposure. A beam of X-Rays passing through the patient is converted into a pattern of electrons in a vacuum tube.
Isoechoic Producing ultrasound echoes equal to those of neighboring or of normal tissues.
MRI Advanced diagnostic imaging technique that produces detailed pictures of the tissues of the human body using a magnet and RF energy (radio waves) to see inside the body
MRI Conditional Under specific conditions of use, safe in the MR environment.
MRI Safe Presents no known hazards resulting from exposure to any MRI environment.
MRI Unsafe Presents unacceptable risks in the MR environment.
Myelogram An X-ray of the spinal cord after injection air or a radiopaque substance into the subarachnoid space.
Resolution Ability to distinguish two close objects as separate. In simple terms, it provides clarity to the ultrasound image.
SAR (Specific Absorption Rate) Amount of RF energy absorbed by the body during an MRI scan measured in Watts per kilogram or W/Kg.
Scan Time (SCT) The total scan time is the time required to collect all data needed to generate the desired images.
Tesla Unit of measurement (T) to determine the strength of a magnet.
Time Gain Compensation (TGC) Ability to compensate for the attenuation of the transmittal beam as the sound wave travels through tissue in the body.
Transducer Sends high frequency sound waves into the body, then receives the sound waves back.
Created by: gnclow
Popular Medical 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