Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read 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.
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards
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

CT Review 2

Instrumentation/Components

QuestionAnswer
What does the gantry contain? Scan controller, generator, transformer, slip ring, tube, detectors, and DAS
What is the host computer? the link between the tech and imaging system, which can multi-task
Is the Scan controller Digital to Analog or Analog to Digital? Digital to Analog (DAC)
Does the generator change AC to DC or DC to AC? AC to DC
What kind of assembly is the tube mounted on? rotating assembly
When is the only time during imaging is the tube stationary? for scout film
What are other names for scout film? plain film and scanogram
The level of photons that penetrate the body is controlled by? Kv
The filament temp is controlled by? mA
What are the beam shaping filters? bowtie and wedge
When referring to the beam wavelengths how is the beam described? polychromatic
what is the range for the high voltage Kv? 80-140 Kv
What is Bremsstrahlung often referred to as? breaking radiation
What does Pre-collimation do? chooses slice thickness and is used after photons produced before they enter pt body
What does Post-collimation do? stops scatter and works with pre to better define slice thickness
What type of gas do the gas detectors use? xenon
What the most commonly used detectors? Solid state/scintillation detectors
what is the coordinate system used in CT? XYZ
which coordinates are used as land marked creating the image? X (across) and Y (up/down)
What type of converter does the DAS (Digital acquisition system) use? analog to digital (ADC)
What is the Array Processor? primary location for mathematical calculations
What is the Array processor's primary function? to change raw data to CT image
What are the main components of the CT system? Gantry, DAS, Array Processor, Operators console, Host computer
What does DICOM stand for? Digital Imaging and Communications in Medicine
What does HIPAA stand for? Health Insurance Portability and Accountability Act
What are some ways to store ct images? CD, DUE, and PACS
What does PACS stand for? picture archiving and communication system
Why is a filter at the tube window used? to limit radiation exposure
What are the 2 types of collimators? pre and post
What gen ct scanner uses scintillation crystals? 4th gen
Created by: Chrslarsen