10 Questions
What is the primary function of detector elements in CT scanning?
Capture energy that has not been attenuated by the patient
What does MHU primarily determine in CT scanning?
Maximum mAs
What does the control console in CT scanning primarily do?
Set scan parameters and mode, house reconstructor, review and archive images, and perform post-processing
Which scanning method involves continuous acquisition in CT?
Volumetric CT – Helical or spiral CT
What does CAT stand for in the context of CT scanning?
- Computerized Axial Tomography
What does the term 'MHU' primarily determine in CT scanning?
Maximum mAs
What is the primary function of detector elements in CT scanning?
Capture energy attenuated by the patient
Which term refers to Computerized Axial Tomography in CT scanning?
CT
What does the control console primarily do in CT scanning?
Set scan parameters and mode
Which scanning method involves Digital projection – AP, PA, Lat or Oblique projection in CT?
Digital projection
Study Notes
Basics of CT
- X-rays were founded in 1895 by Wilhelm Conrad Roentgen
- CT (Computed Tomography) was founded in 1970 by Sir Godfrey Hounsfield, an engineer with EMI, LTD., with first applications in neuroradiology
CT Scanner
- A CT scanner uses X-ray modality to image the body in cross-section
- It is used to determine:
- Extent of trauma
- Location and type of tumors
- Status of blood vessels
- Pre-surgical planning
CT System Components
- Basic components of a CT scanner include:
- Gantry
- X-ray tube
- Detector
- Control console
- The Gantry includes:
- CT X-ray tube
- High voltage generator
- Detector array
- Data acquisition system
- Slip ring
CT X-ray Tube
- The CT X-ray tube has an anode heat capacity of 3.5 MHU up to 6
Test your knowledge on the basics of CT (Computed Tomography) imaging, including the imaging chain, system components, acquisition methods, image quality, and applications. Learn about the history of X-Rays and the beginnings of CT imaging.
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