This new edition of the Student Workbook is designed for in-classroom use and organized in a “fill-in-the-blank” format. The wording of each question corresponds with the lecture slide series Digital Radiography in Practice: Instructor PowerPoint Slides, 2nd Ed. and closely matches the progression of concepts in the textbook. The guiding philosophy is to provide immediate or short-term reinforcement of lecture and reading material by focusing on keywords. Thus, the Workbook should be used on a daily basis, not as a self-test or review after whole units have been covered. “In-class use” is the most recommended method for use with the Digital Radiography in Practice Instructor PowerPoint Slides, 2nd Ed. The Workbook and slides are designed to work in tandem with each other to actively engage the student in classroom learning. The instructor may elect to require this type of classroom and award points for completion of each unit. If the Workbook is used as a reinforcement tool for homework, it is strongly recommended that the student answer the corresponding questions after reading each major section of a chapter. If students wait until after completing an entire chapter, they may have trouble recalling the keywords elicited by each question and are more likely to confuse different concepts. Major unit subheadings are included in the Workbook to match the textbook. For the purposes of unit review, self-testing or preparation immediately prior to a test, “Chapter Review Questions” are provided at the end of each chapter in the textbook. Answer keys to these questions may be made available from your instructor. This Workbook is an invaluable teaching instrument that allows the student to concentrate on the lecture by doing minimal writing while still challenging the student to participate in classroom learning. An efficient “note-taking” tool, it is an important reinforcement tool for homework and individual study.
Author(s): Quinn B. Carroll (editor)
Edition: 2
Publisher: Charles C Thomas Pub Ltd
Year: 2023
Language: English
Commentary: Publisher PDF
Pages: 129
City: Springfield, Illinois
Tags: Radiographic Image Enhancement; Radiographic Image Interpretation; Radiologic
STUDENT WORKBOOK for DIGITAL RADIOGRAPHY IN PRACTICE
INTRODUCTION
How to Use this Student Workbook
1. IN-CLASS USE (RECOMMENDED):
2. HOMEWORK USE:
3. UNIT REVIEW AND SELF-TESTING:
CONTENTS
STUDENT WORKBOOK for DIGITAL RADIOGRAPHY IN PRACTICE
Chapter 1 NATURE OF THE DIGITAL RADIOGRAPH
Development of Digital Radiography
Nature of the Digital Image
Digitizing the Analog Image
Bit Depth, Dynamic Range, and Gray Scale
What is a Pixel?
Voxels, Dels and Pixels
Chapter 2 CREATING THE LATENT IMAGE
Overview of Variables
Creating Subject Contrast
Of Primary Interest for radiographic technique:
Role of Radiographic Technique in the Digital Age
Subject Contrast and Spatial Resolution (Sharpness)
Stages of Image Production
Chapter 3 QUALITIES OF THE DIGITAL RADIOGRAPH
Qualities of the Final Displayed Digital Image
Chapter 4 RADIOGRAPHIC TECHNIQUE FOR DIGITAL IMAGING
Understanding X-Ray Beam Penetration
Sensitivity of Digital Units to Subject Contrast
Subject Contrast and Exposure Latitude
Reducing Use of Grids
Sufficient Input Gray Scale
Effect of mAs and kVp on the Displayed Digital Image
Minimizing Patient Exposure with the 15% Rule
Benefits of High-kVp Radiography
Chapter 5 PREPROCESSING AND HISTOGRAM ANALYSIS
The Generic Steps of Digital Image Processing
Preprocessing
Histogram Analysis
Chapter 6 RESCALING (PROCESSING) THE DIGITAL RADIOGRAPH
Rescaling (Processing)
Chapter 7 DEFAULT POSTPROCESSING I: GRADATION PROCESSING
Digital Processing domains
Data Clipping
Dynamic Range Compression and Equalization
Chapter 8 DEFAULT POSTPROCESSING II: DETAIL PROCESSING
Understanding the Frequency Domain
Frequency Detail Processing
Spatial Detail Processing: Kernels as a Form of Band-Pass Processing
Preparation for Display
Chapter 9 MANIPULATING THE DIGITAL IMAGE:OPERATOR ADJUSTMENTS
Processing Algorithms
Windowing
Postprocessing Features
Chapter 10 MONITORING AND CONTROLLING EXPOSURE
Digital Speed Class
A Brief History of Exposure Indicators
The Deviation Index: Acceptable Parameters for Exposure
Limitations of the DI
Chapter 11 DIGITAL IMAGE ACQUISITION
Direct-Conversion DR Detectors
Indirect-Conversion DR Detectors
Computed Radiography (CR)
Background & Scatter Radiation
Characteristics of the Image Acquisition System
Sharpness of Digital Systems
Efficiency of Image Receptors
Digital Sampling and Aliasing
Other Digital Artifacts
Chapter 12 DISPLAYING THE DIGITAL IMAGE
The Liquid Crystal Display (LCD) Monitor
LCD Image Quality
Advantages of the LCD include:
Disadvantages of the LCD include:
The Nature of Display Pixels
Chapter 13 ARCHIVING PATIENT IMAGES AND INFORMATION
Picture Archiving and Communication Systems (PACS)
Medical Imaging Informatics
Chapter 14 DIGITAL FLUOROSCOPY
Image Recording from an Image Intensifier Tube
Charge-Coupled Devices (CCDs) have:
Dynamic Flat-Panel Detectors (DFPDs)
Optional Review: Direct DFP Detectors:
Optional Review: Indirect DFP Detectors:
Reducing Patient Dose
Chapter 15 QUALITY CONTROL FOR DIGITAL EQUIPMENT
Monitoring of Digital X-Ray Units
Monitoring of Electronic Image Display Systems
