CT: Scanner Architecture

This program is a step-by-step investigation of computed tomography (CT) scanners, from the original EMI head scanner through current models and multi-detector row scanners. Learn how scanners have evolved, what advantages or disadvantages accompanied the evolution, and how diagnostic imaging was affected.

CT Scanner Architecture
  • Rs.500


The appearance of computerized axial tomography was initially met with a bit of skepticism. Critics posited reasons related to the very crude brain images that were produced, coupled with what was, at the time, a fairly hefty price tag. It was thought that hospitals would never spend that much money on an x-ray machine.
As you know, the critics were proven wrong, as CT scanners went on to become the most significant healthcare advancement since the discovery of penicillin. Hospitals everywhere vehemently demanded their own CT systems. Due to the high cost of the technology, many organizations were required to proceed through a certificate of need process that was encumbered by much red tape and a considerable time element.
General Electric (GE) was one of many companies that began to produce CT systems to meet the demand. In the years to follow, much innovation by all manufacturers continually improved the diagnostic power of computed axial tomography.

After completing this program, you should be able to:

  1. Review the historical progression of CT scanning hardware and software from its inception to present day.

  2. Identify CT diagnostic impact over a 25-year evolutionary period.

  3. Recognize CT generations, configurations, limitations and capabilities.

  4. Describe the primary role of computerization and its effect on technologic advancement.

  5. Identify the primary technical factors that affect image quality and radiation dose.


The course objectives specifically target CT technologists.


  1. The Foundation

  2. Helical Technology

  3. Internal Components

  4. Where Are We Now?