Two- and three-dimensional multinuclear stray-field imaging of rotating samples with magic-angle spinning (STRAFI-MAS): From bio to inorganic materials
✍ Scribed by Alan Wong; Dimitris Sakellariou
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 227 KB
- Volume
- 32
- Category
- Article
- ISSN
- 1053-1807
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✦ Synopsis
Abstract
Purpose:
To revisit and illustrate the potential of a simple and effective multidimensional stray‐field imaging technique with magic‐angle spinning, known as STRAFI‐MAS.
Materials and Methods:
STRAFI‐MAS images are acquired with a standard NMR magnet and a traditional magic‐angle sample spinning (MAS) probe. The stray‐field gradients are achieved by placing the MAS probe, along the z‐direction, at a distance from the center of the magnet. No pulsed‐field gradients are applied. The multidimensional spatial encoding is carried out by synchronizing the radiofrequency pulses with the sample MAS rotation.
Results:
Two‐dimensional (2D) and 3D multinuclear images of various phantoms, including a tibia bone and silicon carbide, are recorded. Images of inorganic solids containing quadrupolar nuclei, ^23^Na and ^27^Al, are also explored for the first time by STRAFI‐MAS.
Conclusion:
We have demonstrated that STRAFI‐MAS is a simple and user‐friendly technique for multidimensional imaging without the need of imaging equipment. With the current advancements in NMR and MRI methodologies, STRAFI‐MAS is expected to be further developed and improved. We anticipate that STRAFI‐MAS can spark a wide spectrum of interest, from material to bio science, where can benefit from high‐resolution images. J. Magn. Reson. Imaging 2010;32:418–423. © 2010 Wiley‐Liss, Inc.