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Part 3. Fundamentals of Computerized Radiography and Digital
This CEU will teach on-line the History of computerized radiology, Hardware used in DR, Digital Imager processor, and the Fundamentals of CR.
Author: Nicholas Joseph Jr R.T.(R), M.S., written on Sunday October 3rd 2004 - 4:55 PM Credits: 3
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Define basic terms of the binary computer system: byte, kilobyte, megabyte, gigabyte, and terabyte.
Define the terms pixel, voxel, and their relationship to digital imaging gray scale.
Discuss the formation of a digital image and digitalization.
State the ionizing radiation range for photostimulable phosphors using electromagnetic radiation and alpha particles.
State other medical or scientific applications for photostimulable phosphor imaging besides CR and DR imaging.
Define the terms pixel, and voxel.
Discuss how the gray scale seen with digital imaging is produced electronically.
Discuss the historical aspect of the development of computerized radiography.
Define the term image matrix and what is meant by gray-scale dynamic range.
Calculate the number of pixels an image may have given the matrix size.
State two components of a computers CPU and discuss their functions.
List 2 components of the digital image processor and discuss the application of each to imaging.
List the basic hardware components of a CR imaging system.
Define what is meant by the term photostimulable phosphor.
Discuss the process of photostimulation luminescence.
State the wavelength of light needed to cause photo luminescence and the wavelength of light emitted from the phosphors during laser scanning of the plate.
Discuss why the photostimulable plate must be erased following each exposure and reader scan.
Define the term exposure index and discuss its role in technique selection by the technologist.
Discuss text information data entry into the CR unit using the RIS/HIS broker.
Discuss the process of cassette labeling for reader algorithm selection during processing of the image plate.
State the role of CR image capture into PACS for image display and storage.
Discuss what direct digital radiography (ddR) is and how it is revolutionary over analog radiography and computed radiography
