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Medical nuclear magnetic resonance imaging: I. Physical principles
Investigative Radiology
|July 1, 1981
Summary
Nuclear magnetic resonance (NMR) imaging offers a new way for radiologists to see inside the body. This technique uses magnetic fields and radio waves to create detailed anatomical images.
Area of Science:
- Medical Imaging
- Spectroscopy
- Radiology
Background:
- Nuclear magnetic resonance (NMR) spectroscopy has been a staple in chemical analysis for over 30 years.
- NMR imaging is a recent advancement, providing radiologists with new tools for internal body investigation.
Purpose of the Study:
- Introduce the basic concepts and physical principles of conventional NMR spectroscopy.
- Outline various approaches to producing NMR images.
- Discuss the types of information obtainable from NMR scanners.
Main Methods:
- Utilizes radiofrequency radiation in conjunction with a magnetic field.
- Generates anatomical cross-sections of the body.
- Images can represent hydrogen nucleus concentration or tissue relaxation times.
Main Results:
- NMR imaging provides detailed anatomical cross-sections.
- Image contrast can be based on hydrogen nucleus concentration.
- Image contrast can also be based on tissue relaxation properties.
Conclusions:
- NMR imaging represents a significant development in medical diagnostic tools.
- Understanding the principles of NMR spectroscopy is foundational to NMR imaging.
- Further articles will explore NMR imaging techniques and data interpretation.
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