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Lavin's Radiography for Veterinary Technicians - E-Book

Lavin's Radiography for Veterinary Technicians - E-Book

Marg Brown | Lois Brown

(2014)

Additional Information

Book Details

Abstract

Written by veterinary technicians for veterinary students and practicing technicians, Lavin’s Radiography for Veterinary Technicians, 5th Edition, combines all the aspects of imaging — including production, positioning, and evaluation of radiographs —into one comprehensive text. Completely updated with all new vivid, color equipment photos, positioning drawings and detailed anatomy drawings, this fifth edition is a valuable resource for students, technicians and veterinarians who need information on the latest technology or unique positioning.

  • Broad coverage of radiologic science, physics, imaging and protection provide you with foundations for good technique.
  • Positioning photos, radiographic images and anatomical drawings presented side-by-side with text explanation for each procedure increases your comprehension and retention.
  • Objectives, key terms, outlines, chapter introductions and key points help you organize information to ensure you understand what is most important in every chapter.
  • NEW! More than 1000 new full-color photos and updated radiographic images visually demonstrate the relationship between anatomy and positioning.
  • NEW! All-new color anatomy art created by an expert medical illustrator help you to recognize and avoid making imaging mistakes.
  • NEW! Non-Manual restraint techniques including sandbags, tape, rope, sponges, sedation and combinations improve your safety and radiation protection.
  • NEW! Chapter on dental radiography aids general veterinarian techs and those specializing in dentistry.
  • NEW! Increased emphasis on digital radiography, including quality factors and post-processing, keeps you up-to-date on the most recent developments in digital technology.

Table of Contents

Section Title Page Action Price
Front cover cover
Half title page i
Evolve page ii
Lavin's Radiography for Veterinary Technicians, 5/e iii
Copyright page iv
Contributors v
Dedication vi
Preface vii
Acknowledgments ix
Credits xi
Table of Contents xv
One Diagnostic Imaging 1
One The Technical Side of Imaging 2
1 Basic Concepts 2
Outline 2
Learning Objectives 2
Key Terms 2
Arithmetic 3
Fractions 3
Addition and Subtraction 3
Whole Numbers 3
Proportionality (Variation) of Numbers 3
Direct Proportionality 3
Indirect Proportionality 3
Units of Measurement 3
Mass 3
Length 3
Time 3
Prefixes 4
Summary 4
Review Questions 4.e1
2 The Atom and Radioactivity 5
Outline 5
Learning Objectives 5
Key Terms 5
The Elements 6
Atomic Theory 6
Atomic Structure 6
The Electron 6
The Proton 8
The Neutron 9
Atomic Weight 9
Atomic Nomenclature 9
Atomic Representation 9
Combinations of Atoms 9
The Orderly Organization of Matter 9
Isotopes 9
Radioactivity 9
Ionization 9
Summary 10
Review Questions 10.e1
3 Electrostatics and Energy, Magnetism and Electricity 11
Outline 11
Learning Objectives 11
Key Terms 11
Electrostatics and Energy 12
Matter 12
Energy 12
Electrical Energy 12
Electromagnetic Spectrum 12
Particle-Wave Theory 12
Frequency 12
Energy in Radiography 14
Properties of X-Rays 14
Rœntgen’s Properties of Rays 14
Summary 14
Magnetism and Electricity 15
Electricity Becomes X-Rays 15
Electrostatics 15
Laws of Electrostatics 15
Electrification 16
Contact 16
Friction 16
Induction 17
Conductors and Insulators 17
Electric Current 17
Resistance 17
Potential Difference 17
Voltage 18
Summary 18
Review Questions 18.e1
Electrostatics and Energy 18.e1
Magnetism and Electricity 18.e1
4 Diagnostic X-Ray Production 19
Outline 19
Learning Objectives 19
Key Terms 19
Diagnostic X-Ray Production 20
Power 20
The Electrical Circuit 20
The X-Ray Circuit Is Actually a Circle 20
On/Off Switch 20
Wall Switch 20
Line Voltage Compensator 21
Circuit Breakers: Amperage and Ground 22
Amperage 22
Ground 22
Direct Current and Alternating Current 22
Transformers 23
Rectifiers 24
Three-Phase Circuits 25
High Frequency 25
The Outside of the X-Ray Unit 26
Large Animal Portable X-Ray Units 27
Diagnostic X-Ray Production 27
The X-Ray Tube 27
The Cathode 28
The Anode 30
The Rotating Anode 30
The Rotor Circuit 30
The Stationary Anode 31
The Line Focus Principle 31
Off-Focus Radiation and Heat Bloom 31
Heat Dissipation 31
The Tube Rating Chart 32
Focal Spot Bloom 33
The Anode Heel Effect 33
The Exposure Switch 34
Exposure Switch Variations 35
Summary 35
Review Questions 35.e1
Two The Application of X-rays and the Presentation of the Image 36
5 Imaging on Film* 36
Outline 36
Learning Objectives 36
Key Terms 36
A Brief History of Terminology 37
Film-Based Imaging 38
X-Ray Cassettes 38
Film/Screen Contact 39
Intensifying Screens 42
Manufacture 42
Characteristics 42
The Blue/Green Question 44
More about Color 44
Screen Speed 45
Luminescence 45
Screen Aging Response 46
Screen Artifacts 48
Chemistry Spills 48
Screen Cleaners 49
Radiography Film 49
World’s First Human Portrait 50
Composition of Radiography Film 51
Film Base 51
Film Emulsion 52
The Supercoat 53
Latent Image Formation 53
Base + Fog 54
Film Response to Light 54
Film Colors 54
Film Speed 55
Film Speed and White Box Film 55
Resolution 55
Storage: Cassettes, Screens, and Films 56
Film 56
Cassettes and Screens 57
Summary 57
Review Questions 57.e1
6 Producing the Image 58
Outline 58
Learning Objectives 58
Key Terms 58
The Radiography Unit in Use 59
Film Fog 59
The Technical Factors 61
Radiographic Contrast versus Subject Contrast 61
Distance, Kilovoltage, Milliamperage, Time 61
Distance and the Inverse Square Law 61
Kilovoltage, Milliamperage, and Time 62
Optimizing Kilovoltage 63
The 15% Rule 64
Milliamperage 64
Adjusting the Factors 65
Developing Technique Charts 65
The Three “Commandments” 65
Two Radiographic Positioning and Related Anatomy 173
17 Overview of Positioning 174
Outline 174
Learning Objectives 174
Key Terms 174
Positional Terminology 175
Rules of Positioning 175
Limb Terminology 175
Patient Positioning 176
The Patient 176
Patient Preparation 177
Human Safety 178
Positioning Aids 178
Required Views and Positioning Guidelines 179
Image Identification 181
Viewing Radiographs 182
Radiographic Checklist 182
Review Questions 183.e1
Bibliography 183
18 Small Animal Abdomen 184
Outline 184
Learning Objectives 184
Key Terms 184
Radiographic Concerns 185
Positions 186
Lateral 186
Measure: 186
Central Ray: 186
Canine: 186
Feline: 186
Borders: 186
Positioning 186
Comments and Tips 186
Ventrodorsal 188
Measure: 188
Central Ray: 188
Canine: 188
Feline: 188
Borders: 188
Positioning 188
Comments and Tips 189
Further Views 190
Dorsoventral 190
Measure, Central Ray, Borders: 190
Positioning 190
Comments and Tips 190
Lateral Decubitus (Ventrodorsal View with Horizontal Beam) 191
Measure, Central Ray, Borders: 191
Positioning 191
Comments and Tips 191
Modified Lateral and Lateral Oblique 192
Both Positions 192
Measure: 192
Central Ray: 192
Borders: 192
Modified Lateral 192
Glossary 513
Index 525
A 525
B 526
C 526
D 528
E 530
F 530
G 532
H 532
I 533
J 534
K 534
L 534
M 535
N 536
O 537
P 537
Q 538
R 538
S 539
T 542
U 543
V 543
W 544
X 544