Course:
College of Radiographers CPD Endorsed, Computed Tomography
Module:
CT Methods: Conventional, Spiral, and Multi-Row Detectors
Module Description:
Audience: Radiologic technologists interested in learning about CT
Prerequisities: None
CT Methods describes the unique differences of conventional, spiral, and mutli-row detector Computer Tomography. This module will provide the learner with information on the following topics:
Learning Objectives
* Name and briefly describe the five quality characteristics of a Computer Tomography (CT) image
* Describe the concept of contrast sensitivity and explain how it relates to CT imaging
* Identify the adjustable factors that have a significant effect on contrast sensitivity and visualization of specific tissues with CT imaging,
* Describe the concept of image detail and how it applies to clinical CT imaging
* Identify at least two design characteristics of CT equipment that can have an effect on image detail during the scanning phase
* Identify and briefly explain the effect of at least three protocol factors that can be adjusted to change image detail during the image reconstruction phase
* Describe the concept of image noise and its significance in clinical CT imaging
* Describe the relationship between voxel size and image noise in CT imaging
* Describe the relationship between patient dose and image noise in CT imaging
* Explain how the selection of specific filter algorithms can affect image noise in CT imaging
* Explain how the adjustable window width affects the visual noise in a CT image
* Describe the structure of a slice of tissue in terms of voxels in CT imaging
* Discuss the structure of a digital image in terms of pixels
* Describe the concept of CT numbers and their relationship to tissue characteristics
* Explain why water has a CT number value of zero
* Identify the units that are used to express CT number values, & Much More.
Author:
Dr. Perry Sprawls
About the author:
Perry Sprawls, Ph.D. is a medical physicist and Professor of Radiology at Emory University in Atlanta. He is an educator who has worked extensively in the field of magnetic resonance imaging. His activities include being the Director of the Magnetic Resonance Education Center at Emory University, conducting courses in MRI in many countries of the world, and authoring textbooks in the field of medical imaging. His latest book is Magnetic Resonance Imaging: Principles, Methods and Techniques. Dr. Sprawls is recognized as a leader in using modern technology to improve education, especially in the classroom. His high-qualtiy computer generated graphics provide students with vivid windows into the often invisible and sometimes complex world of physics and technology of medical imaging. His belief is that topics such as magnetic resonance imaging are not difficult to learn and apply in clinical practice, if we have the opportunity to approach them from a practical perspective.
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