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Duke Review of MRI Principles:Case Review Series E-Book

Duke Review of MRI Principles:Case Review Series E-Book

Wells Mangrum | Quoc Bao Hoang | Tim J Amrhein | Scott M Duncan | Charles M Maxfield | Elmar Merkle | Allen W Song

(2018)

Additional Information

Book Details

Abstract

A solid understanding of MRI physics is essential for both residents and practicing radiologists, and Duke Review of MRI Physics Principles: Case Review Series, 2nd Edition, provides practical applications, board-style self-assessment questions, and clinically relevant cases in a high-yield, easy-to-digest format. Designed to help you solve clinical questions, arrive at accurate diagnoses, and use MRI more effectively in your practice, it uses a case-based approach to demonstrate the basic physics of MRI and how it applies to successful and accurate imaging, interpretation, and diagnosis.

  • Includes a new chapter on MRI Safety, as well as new and improved color images in functional MRI, perfusion MRI, and diffusion tensor imaging.
  • Includes new Take-Home-Points at the end of each chapter for easy recall and review.

Table of Contents

Section Title Page Action Price
Front Cover Cover
IFC ES1
Duke Reviewof MRI Physics: CASE REVIEW SERIES\r i
Series Editor ii
Volumes in the CASE REVIEW Series ii
Duke Reviewof MRI Physics: CASE REVIEW SERIES\r iii
Copyright iv
Dedication\r v
CONTRIBUTORS vii
SERIES FOREWORD ix
PREFACE xi
CONTENTS xiii
1 - T1 Contrast\r 1
Case Answers 2
Basic Spin Principles and T1 Relaxation 2
T1 Contrast and Pulse Sequence Considerations 3
Spin Echo 3
Gradient Recalled Echo 3
Clinical Applications 4
2 - T2 Contrast\r 11
Case Answers 12
Basic Spin Principles and T2 Relaxation 12
T2 Contrast and Pulse Sequence Considerations 13
Spin Echo 13
Gradient Recalled Echo 14
Fat on T2-Weighted Imaging 15
CASE 2.2 ANSWER 15
Autosomal Dominant Polycystic Kidney Disease 17
Variable Appearance of Fluid on T2-Weighted Imaging 17
CASES 2.3, 2.4, AND 2.5 ANSWERS 17
Cavernoma With Superficial Siderosis 19
Appearance of Blood on T2-Weighted Spin Echo Images 19
CASES 2.6 AND 2.7 ANSWERS 19
Pivot Shift Bone Marrow Contusion 20
Marrow T2 Hyperintensity 20
CASE 2.8 ANSWER 20
Vasogenic Edema Secondary to Multiple Brain Metastases 21
Vasogenic Edema and Cytotoxic Edema 21
CASES 2.9, 2.10, AND 2.11 ANSWERS 22
MR Cholangiopancreatography 23
CASES 2.12, 2.13, AND 2.14 ANSWERS 23
Peripheral Nerve Schwannoma 25
Hepatic Hemangioma 25
T2 Hyperintense Neoplasms 25
CASES 2.15, 2.16, AND 2.17 ANSWER 25
Full-Thickness Tear of the Supraspinatus Tendon 26
Fibulocollateral Ligament Sprain 26
Physics of Low T2 Signal in Tendons and Ligaments 26
CASE 2.19 ANSWER 26
MR Appearance of Cartilage 27
CASE 2.20 ANSWER 27
Septate Uterus 28
Uterine Leiomyomas 28
Uterine Anatomy and Tight Cell Packing 28
CASE 2.22 ANSWER 28
Prostate Adenocarcinoma Invasion into the Left Seminal Vesicles 29
Brain Abscess With a Thin T2 Hypointense Rim 30
Pathology Manifesting as T2 Hypointensity 30
TAKE-HOME POINTS 30
Physics 30
Clinical Considerations 30
References 31
3 - Proton Density\r 33
Case Answers 34
Physics 34
Clinical Considerations 35
4 - Gadolinium-Based Contrast Agents\r 39
Case Answers 40
Physics 40
Discussion 41
CASE 4.2 ANSWERS 41
Discussion 42
CASE 4.3 ANSWERS 42
Discussion 43
CASE 4.4 ANSWERS 43
Discussion 44
CASE 4.5 ANSWERS 44
Discussion 45
CASE 4.6 ANSWERS 45
Discussion 46
CASE 4.7 ANSWERS 46
TAKE-HOME POINTS 47
Suggested Readings 47
5 - Frequency and Spatial Saturation Pulses\r 49
Case Answers 50
Saturation Pulses 50
6 - Inversion Recovery\r 55
Case Answers 56
Inversion Recovery 56
Diagnosis 57
Discussion 57
CASE 6.2 ANSWERS 58
Diagnosis 59
Discussion 59
CASE 6.3 ANSWER 59
Diagnosis 60
Discussion 60
CASE 6.4 ANSWER 60
Diagnosis 61
7 - Type 2 Chemical Shift Artifact\r 65
Case Answers 66
Type 2 Chemical Shift 66
Hepatic Steatosis and Focal Fat Sparing 68
CASES 7.2 AND 7.3 ANSWERS 68
Hemosiderin Deposition 69
Signal Loss from T2* Decay 69
CASES 7.4 AND 7.5 ANSWERS 70
Angiomyolipoma and Hemorrhagic Cyst 71
Using the India Ink Artifact 71
CASES 7.6 AND 7.7 ANSWERS 71
Hepatocellular Adenoma 72
CASE 7.8 ANSWERS 72
Dixon Technique 72
Mature Cystic Ovarian Teratoma (Dermoid Cyst) 74
Using Fat-Water Separation Imaging 74
CASE 7.10 ANSWERS 74
TAKE-HOME POINTS 74
Physics 74
Clinical Considerations 74
References 74
8 - Susceptibility Artifact\r 77
Case Answers 78
Susceptibility Artifact 78
Discussion 81
CASES 8.2, 8.3, AND 8.4 ANSWERS 81
Susceptibility in Gradient Recalled Echo and Susceptibility-Weighted Image Sequences 81
Discussion 82
Further Considerations Regarding Susceptibility in GRE and SWI Sequences 82
CASE 8.5 ANSWER 82
Blooming Due to Susceptibility 83
CASE 8.6 ANSWER 83
Discussion 84
Susceptibility Effects in Relation to Time to Echo 84
CASES 8.7 AND 8.8 ANSWERS 84
Susceptibility and Fat Suppression 85
CASE 8.9 ANSWER 85
Discussion 86
Susceptibility With Flair Imaging 86
CASE 8.10 ANSWER 86
Discussion 88
Susceptibility With Diffusion Imaging 88
CASE 8.11 ANSWER 88
Susceptibility With T2-Weighted Imaging 89
CASES 8.12, 8.13, AND 8.14 ANSWER 89
TAKE-HOME POINTS\r 89
Defining Susceptibility\r 89
Methods to Reduce Susceptibility Artifact 89
Clinical Utility of Susceptibility Artifact 89
Susceptibility Artifact Interference With Diagnosis 89
Sequences Sensitive to Susceptibility Effects 89
References 90
9 - Motion, Pulsation, and Other Artifacts \r 91
CASE ANSWERS 92
Motion and Pulsation Artifact 92
10 - Vascular Contrast\r 107
CASE ANSWERS 108
Vascular Contrast 109
Flow Voids 109
Flow-Related Enhancement 109
Entry Slice Phenomenon 110
Gradient Moment Nulling 110
Discussion 112
CASE 10.2 ANSWER 112
Discussion 113
CASE 10.3 ANSWERS 113
11 - Cardiac Magnetic Resonance Imaging\r 121
CASE ANSWERS 122
Discussion 122
Cardiac MRI 122
Black Blood Technique 122
White Blood Technique 123
Discussion 124
CASE 11.2 ANSWER 124
Discussion 125
CASE 11.3 ANSWERS 125
Discussion 126
CASE 11.4 ANSWERS 126
Discussion 127
CASE 11.5 ANSWER 127
Discussion 128
CASE 11.6 ANSWERS 129
Discussion 130
CASE 11.7 ANSWER 130
TAKE-HOME POINTS 130
References 130
12 - Time-of-Flight Imaging\r 131
Case Answers 132
Physics 132
Signal Saturation 132
Inflow of Unsaturated (Fresh) Protons 133
Limitations to Time of Flight 133
Additional Properties Unique to Time of Flight 134
Discussion 135
CASE 12.2 ANSWERS 136
Discussion 137
CASE 12.3 ANSWERS 137
Discussion 138
CASE 12.4 ANSWER 138
Discussion 139
CASE 12.5 ANSWER 139
Discussion 140
CASE 12.6 ANSWER 140
Discussion 142
CASE 12.7 ANSWER 142
TAKE-HOME POINTS 143
References 143
13 - Time-Resolved Contrast-Enhanced Magnetic Resonance Angiography\r 145
CASE ANSWERS 146
Time-Resolved Magnetic Resonance Angiography 146
k-Space Physics 146
k-Space Filling Techniques 147
Parallel Imaging 147
Discussion 149
CASE 13.2 ANSWERS 149
Discussion 150
CASE 13.3 ANSWER 150
Discussion 152
CASE 13.4 ANSWERS 152
Discussion 154
CASE 13.5 ANSWER 154
Discussion 156
CASE 13.6 ANSWER 156
Discussion 157
CASE 13.7 ANSWER 157
TAKE-HOME POINTS 158
References 158
14 - Phase Contrast\r 159
Case Answers 160
Thrombus 161
Phase Contrast Imaging 161
Conventional Two- and Three-Dimensional Phase Contrast Imaging 161
Four-Dimensional Phase Contrast Imaging 163
CASE 14.2 ANSWERS 163
Right Transverse and Sigmoid Sinus Thrombosis 163
Magnetic Resonance Venogram 163
CASE 14.3 ANSWERS 164
Chiari I Malformation 165
Cerebrospinal Fluid Flow 165
CASE 14.4 ANSWERS 165
Atrial Septal Defect 166
Flow Assessment 166
CASE 14.5 ANSWERS 166
Phase Contrast Assessment of Aortic Valve Pathology and Cardiac Flow Quantification 169
CASES 14.6 AND 14.7 ANSWERS 169
TAKE-HOME POINTS 169
Physics 169
Clinical Considerations 169
References 169
15 - Diffusion Magnetic Resonance Imaging\r 171
Case Answers 172
Physics 173
Discussion 175
CASE 15.2 ANSWERS 175
16 - Perfusion Magnetic Resonance Imaging\r 187
CASE ANSWER 188
Discussion 189
Ring Artifact 189
CASE 16.2 ANSWER 189
Discussion 190
Cardiac Perfusion MRI: Further Considerations 190
CASE 16.3 ANSWER 190
Brain Perfusion MRI 191
CASE 16.4 ANSWER 191
MRI Perfusion Limitations 192
CASE 16.5 ANSWER 192
Discussion 193
MRI Perfusion Methods 193
CASE 16.6 ANSWER 195
Discussion 196
Other Uses of MRI Perfusion 196
CASE 16.7 ANSWER 196
Discussion 197
Other Uses of MRI Perfusion 197
CASE 16.8 ANSWER 197
Discussion 198
CASE 16.9 ANSWER 198
Discussion 199
CASE 16.10 ANSWER 199
Discussion 201
CASE 16.11 ANSWER 201
TAKE-HOME POINTS 201
Defining Perfusion 201
Cardiac Perfusion Imaging 201
Brain Perfusion Imaging 201
Body Perfusion Imaging 201
References 201
17 - Magnetic Resonance Spectroscopy\r 203
CASE ANSWER 203
Magnetic Resonance Spectroscopy 204
Discussion 205
Normal Spectrum 205
CASE 17.2 ANSWERS 206
Astrocytoma Grading 206
Single-Voxel Versus Multivoxel Spectroscopy 207
CASE 17.3 ANSWER 207
Low-Grade Astrocytoma 208
Spectroscopy Changes With Field Strength and Time to Echo 208
CASE 17.4 ANSWER 208
Lactate Peaks 209
CASE 17.5 ANSWER 209
Acute Infarct 210
CASE 17.6 ANSWER 210
Kearns-Sayre Syndrome 210
CASE 17.7 ANSWER 210
Hypoxic-Ischemic Encephalopathy 211
Voxel Size in Spectroscopy 212
CASE 17.8 ANSWER 212
Primary Angiitis of the Central Nervous System 213
CASE 17.9 ANSWER 213
Krabbe Disease 214
Multivoxel Spectroscopy 214
CASE 17.10 ANSWERS 214
Alzheimer Disease 215
CASE 17.11 ANSWER 215
TAKE-HOME POINTS 215
ACKNOWLEDGMENT 215
References 215
18 - Functional Magnetic Resonance Imaging\r 217
Case Answers 218
Functional MRI 219
Wada Test and Intraoperative Cortical Stimulation 219
BOLD Effect and the Hemodynamic Response 219
Creating fMRI Images 220
Diagnosis 221
Discussion 221
fMRI Tasks 221
CASE 18.2 ANSWERS 221
Diagnosis 222
Discussion 222
Statistical Analysis of fMRI Data 222
CASE 18.3 ANSWERS 223
Diagnosis 223
Discussion 223
Supplementary Cortical Activation 223
CASE 18.4 ANSWERS 223
Diagnosis 225
Discussion 225
Participatory Cortical Areas 225
CASE 18.5 ANSWER 225
Diagnosis 226
Discussion 226
Susceptibility Artifact 226
CASE 18.6 ANSWER 226
Diagnosis 227
Discussion 227
Pathology Results in Alterations to the Hemodynamic Response 227
CASE 18.7 ANSWER 227
Diagnosis 228
Discussion 228
Tumors Effect on Autoregulation 228
CASE 18.8 ANSWER 228
Diagnosis 229
Discussion 229
Motion and Susceptibility Artifact Limitations 229
CASE 18.9 ANSWER 229
TAKE-HOME POINTS 229
References 229
19 - Basics of Magnetic Resonance Imaging Safety\r 231
CASE ANSWER 232
MR Safety 232
Static Magnetic Field 232
Direct Effects of the Static Magnetic Field 233
Indirect Effects of the Static Magnetic Field 233
ANSWERS: STATIC MAGNETIC FIELD 234
Magnetic Materials 234
Preventing Accidents Due to Magnetic Attraction 235
Quenching 235
ANSWERS: QUENCHING 236
Gradient Fields 236
Direct Effects 236
Indirect Effects 236
Radiofrequency Field 236
ANSWERS: SPECIFIC ENERGY ABSORPTION RATE 238
Discussion 239
Implants and MRI 239
CASE 19.2 ANSWERS 240
Discussion 240
Active Devices 240
CASE 19.3 ANSWERS 240
Discussion 241
Passive Implants 241
Piercings 241
Tattoos and Permanent Makeup 241
CASE 19.4 ANSWERS 242
TAKE-HOME POINTS 242
References 242
INDEX 243
A 243
B 243
C 243
D 244
E 244
F 244
G 244
H 245
I 245
J 245
K 245
L 245
M 245
N 246
O 246
P 246
Q 247
R 247
S 247
T 247
U 248
V 248
W 248
X 248
Z 248
IBC ES2