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Magnetic Resonance Microscopy
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Страница 1
Magnetic Resonance Microscopy Instrumentation and Applications in Engineering, Life Science, and Energy Research
Страница 3
Страница 4
Contents
List of Illustrations
List of Tables
Guide
Pages
Foreword
Preface
Страница 12
1 Microengineering Improves MR Sensitivity
1.1 Introduction
1.1.1 Comparative Electromagnetic Radiation Imaging
1.1.2 Limit of Detection
1.1.3 Limit of Imaging Resolution
1.2 High Resolution From Enhanced Sensitivity 1.2.1 Coil Miniaturization
1.2.2 The Lenz Lens: A Tool to Boost Sensitivity
1.3 MR Microscopy and Neurotechnologies
1.3.1 Tissue Scaffolds and Implants
1.3.2 The Case of Epileptogenesis: Ex Situ Brain Slices and in Situ Histology
1.4 Augmented MR Microscopy
1.4.1 Perfusion
1.4.2 Electrochemistry
1.4.3 Hyperpolarization
1.5 Conclusions
References
Notes
2 Ceramic Coils for MR Microscopy
2.1 Introduction
2.2 State of the Art
2.3 Modeling and Design Guidelines
2.3.1 Dielectric Cylindrical Resonator Modes
2.3.2 Power Loss Contributions in a Ceramic Probe
2.3.3 SNR Estimation
2.3.4 Mode Frequency
2.3.4 Application: Design Guidelines
2.3.5 Validation
2.4 MRM with Ceramic Coils
2.4.1 Practical Considerations and Experimental Setup
2.4.2 Performance
2.4.3 Dual Ceramic Coils
2.5 Conclusion and Future Prospects
References
3 Portable Brain Scanner Technology for Use in Emergency Medicine
3.1 Where Would You Use a Portable or Small Footprint Magnetic Resonance Imager?
3.2 Rethinking System-level Approaches
3.3 Three Levels of POC Use
3.3.1 Brain MRI in an “Easy-to-Site Suite”
3.3.2 Brain MRI with a Portable Device
3.3.3 Brain MRI as a Monitoring Device
3.4 Clinical Use Scenarios of “Easy-to-Site” POC, and Monitoring MR Devices
3.4.1 ED and ICU
3.4.2 Acute Stroke Care
3.4.3 Assessing Pediatric Hydrocephalus in the Developing World
3.4.3 Mass-effect Monitor in ED or ICU Setting
3.4.4 Neonatal Intensive Care Unit (NICU)
3.5 Technological Approaches to POC and/or Portable MRI
3.5.1 Magnet Designs 3.5.1.1 Advances in Cryogenics for Supercon Magnets
3.5.1.2 Superconducting Solenoid Designs for the Easy-to-Site Suite
3.5.1.3 Shorter Supercon Magnets from Relaxed Homogeneity
3.5.1.4 Permanent Magnets for Portable MRI
3.5.1.5 Halbach Arrays for Portable MRI
3.5.1.6 Other Types of Permanent Magnet Arrays
3.5.2 Other Technological Challenges
3.5.2.1 Image Encoding in an Inhomogeneous Field
3.5.2.2 Limited Frequency Bandwidth of Tuned Radiofrequency Coils
3.5.2.3 External EMI Removal (Eliminating the Shielded Room)
3.6 Conclusions
Acknowledgments
References
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