RAD 227 - CT Physics and Equipment
This course is designed to cover system operations and components, image processing and display, image quality, and artifacts involved in Computed Tomography (CT). Emphasis will be placed on data acquisition, tissue attenuation conversions, image reconstruction algorithms, processing display, and factors controlling image resolution.
Prerequisite: The student must be a Registered Radiologic Technologist (ARRT)
3 Class Hours
Learning Outcomes of the Course:
Upon successful completion of this course the student will be able to:
1. Describe the history of Computed Tomography.
2. Describe the components of the CT imaging system.
3. Describe the types, location, and function of CT detectors.
4. Define linear attenuation coefficient.
5. Define and describe the functions of the data acquisition system (DAS).
6. List CT computer data processing steps.
7. Identify common filters, algorithms, and kernel settings.
8. Explain post-processing techniques.
9. Define terms such as:
d) X, Y, Z coordinates
f) Window width (WW) and Window level (WL)
g) Spatial resolution
h) Contrast resolution
j) Region of interest (ROI)
10. Name the factors affecting image quality in CT.
11. Trace the sequence of events in CT scanning from application of electrical current to the x-ray tube through image display.
12. Relate differences between conventional and spiral CT scanning.
13. Name the radiation protection devices and scan factors used to reduce patient dose in CT.
14. List and describe current data storage techniques.
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