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Advanced Quantitative Imaging Of Knee Joint Repair

Advanced Quantitative Imaging Of Knee Joint Repair

Regatte Ravinder R

(2014)

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Book Details

Abstract

Over the last two decades, there have been numerous exciting developments in the surgical field of articular cartilage repair. Magnetic resonance imaging plays a critical role in pre-operative surgical planning, through its ability to identify the extent and severity of cartilage lesions. It also plays an important role in post-operative management, by allowing surgeons to noninvasively monitor the morphological status of repaired cartilage tissue.This book covers recent advances in ultra high field MRI and biochemical MRI techniques such as T2 mapping, delayed gadolinium enhanced MRI of cartilage (dGEMRIC), gagCEST and sodium MRI. It is written by a multidisciplinary team including basic scientists, radiologists, orthopaedic surgeons and biomedical engineers. The volume is an ideal reference guide for musculoskeletal radiologists, basic research scientists, orthopedic surgeons and biomedical engineers etc.

Table of Contents

Section Title Page Action Price
CONTENTS vii
Preface v
1. Surgical Techniques for Knee Joint Repair 1
Introduction 1
Anterior Cruciate Ligament Injury 2
Anatomy 2
Biomechanics 2
Epidemiology 2
Pathoanatomy 3
Work up 3
Imaging 4
Treatment 5
Outcomes 7
Posterior Cruciate Ligament Injury 8
Introduction 8
Anatomy 9
History and physical examination 10
Imaging 11
Treatment 12
Surgical technique 13
Transtibial technique 13
Tibial inlay technique 14
Outcome 15
Posterolateral Corner Injury/LCL 16
Anatomy 16
Biomechanics 17
Epidemiology 18
Work up 18
Imaging 19
Treatment 19
Outcome 22
Meniscal Injuries 23
Introduction 23
Anatomy 24
History and physical 27
Imaging 28
Treatment 28
Cartilage Injury 34
Introduction 34
Work up 36
Surgery 37
Outcome 38
Medial Collateral Ligament Injury 38
Introduction 38
Anatomy 39
Evaluation 39
Imaging 40
Treatment 40
Multi-Ligament Knee Injury 42
Summary 42
References 43
2. Morphological Imaging of Joint Repair 51
Introduction 51
Rationale for Morphological Imaging 52
Clinical Pulse Sequences for Postoperative Cartilage, Menisci and Ligaments Imaging 53
Morphological and Semi-Quantitative Imaging of Joint Morphology in Repair Procedures 55
Anterior cruciate ligament (ACL) reconstruction 55
Meniscal surgery 71
Cartilage repair 79
Miscellaneous knee repair procedures 89
Clinical Potential and Challenges 91
Summary 95
References 96
3. T2 Mapping of Knee Joint Repair 109
Introduction 109
Rationale for T2 Mapping 115
Pulse Sequence Developments for Cartilage 118
Menisci and Ligaments Imaging 120
T2 and T2* for Quantitative Assessment of Knee Joint Repair 122
Clinical Potential and Challenges 125
Summary 126
Acknowledgments 127
References 127
4. MRI T1ρ Mapping of Knee Joint Repair 133
Introduction 133
Technique 134
Basic principle 134
Biochemical correlation 136
Sequence development of MR T1ρ in cartilage 137
Planes 140
Loading conditions 140
Cartilage and meniscus segmentation 141
Reproducibility 143
Controls 144
Clinical Correlations of T1ρ 144
Physiological variations of T1ρ 147
Meniscus analyses 149
Cartilage T1ρ versus meniscus T1ρ 150
T1ρ versus T2 151
Knee Repair Surgery 151
Cartilage Repair Procedures 152
Meniscus T1ρ in subjects with CR 156
T1ρ in Subjects with ACL Ruptures 157
ACL rupture meniscus analyses 158
ACL Reconstruction 159
Cartilage after ACLR 159
Meniscus after ACLR 162
Summary ACL 162
Limitations/Challenges 163
Other potential applications of T1ρ after knee joint repair 164
Clinical application 165
Summary 165
References 165
5. dGEMRIC Mapping of Knee Joint Repair 177
Rationale for dGEMRIC Mapping 177
Basics and Pulse Sequence Developments 178
Quantitative Assessment of dGEMRIC of Knee Joint Repair 182
Clinical Potential and Challenges and Summary 188
References 190
6. Diffusion Tensor Imaging (DTI) of Knee Joint Repair 197
Introduction 197
General Ideas about Diffusion 198
Measurement of Diffusion with Magnetic Resonance 201
Effect of magnetic gradients in the magnetization 201
Measurement of molecular displacement 203
MR measurement of diffusion 205
Diffusion Tensor Imaging 206
Diffusion tensor 206
Diffusion tensor representation and DTI parameters 207
Pulse Sequences for Diffusion Measurement in Articular Cartilage 209
Single-shot diffusions sequences 210
Multiple-shot diffusion sequences 213
Protocol Optimization for DWI of Articular Cartilage 215
Diffusion of Articular Cartilage: Interpretation and Clinical Results 218
Ex vivo measurements of the diffusion coefficient on articular cartilage (without DTI) 219
Ex vivo measurements of DTI of articular cartilage 224
Measurements of DTI on healthy and OA articular cartilage 231
Diffusion measurement in healthy volunteers: Technical feasibility of different sequences 231
Diffusion Imaging of Knee Joint Repair 236
Summary 240
References 240
7. Chemical Exchange Saturation Transfer Contrast by Glycosaminoglycans and its Application for Monitoring Knee Joint Repair 249
Chemical Exchange Saturation Transfer (CEST) 249
Glycosaminoglycans 252
Measuring CEST Effects 254
More About MT 257
Uniform MT in CEST42,43 259
CEST MRI on Human Knee Joints: Experimental 261
CEST MRI on Human Knee Joints: Data Processing 262
Example 1: Patient after Autologous Chondrocyte Transplantation 263
Example 2: Patients after Matrix assisted Autologous Chondrocyte Transplantation 264
Future Improvements 265
References 267
8. Sodium Imaging of the Knee Joint Repair 273
Introduction 273
Sodium in Cartilage 274
Sodium Magnetic Resonance 275
Sodium NMR properties 275
Sodium relaxation times in cartilage 278
Sodium MRI acquisition 278
Fluid suppression 280
Tissue sodium concentration quantification 282
Sodium and GAG correlation in cartilage 284
Limitations and future prospects of the technique 285
Summary of Cartilage Repair Procedures 285
Palliative procedures 286
Reparative procedures: Bone marrow stimulation (BMS) 286
Restorative procedures: Replacement techniques 287
Restorative procedures: Cell-based techniques 288
Sodium MRI of Knee Joint Repair: Preliminary Studies 289
Sodium MRI without fluid suppression 289
Sodium MRI with fluid suppression 291
Comparison with other biochemical MRI techniques 296
Conclusion 297
Acknowledgments 297
References 297
9. Magnetic Resonance Imaging of Cartilage Repair with a Focus on Subchondral Bone 305
Introduction 305
Surgical Techniques 306
Microfracture 306
Osteochondral autografting 306
Repair with synthetic resorbable scaffolds 307
Autologous chondrocyte implantation and matrix-assisted autologus chondrocyte implantation 308
MRI of Cartilage Repair 309
MRI of cartilage 309
MRI of subchondral bone 310
Classification system for MRI of cartilage repair 311
Normal MRI findings 311
Advanced imaging techniques 315
Conclusion 317
Acknowledgements 318
References 318
10. Application of Imaging to Knee Biomechanics and Reconstruction 325
Introduction 325
Geometrical Modeling 328
Joint Mechanics, Pressures and Osteoarthritis 335
Design and Analysis of Joint Reconstruction 345
Potential Future Advances 361
Acknowledgments 362
References 362
11. Tissue Engineering Approaches for Knee Joint Repair 371
Introduction and Anatomy of Human Knee 371
Anatomy of osteochondral tissue 372
Anatomy of the meniscus 374
Anatomy of the ligament 376
Tissue Engineering Approaches for Human Knee Regeneration 376
Osteochondral TE 378
Meniscus TE 386
Ligament TE 390
Current Challenges and Future Directions 392
Conclusion 393
Acknowledgments 393
References 393
Index 401