Nuclear Relaxation Time Images by Radiofrequency Field Gradients Applied to the Study of Solvent Permeation into Polymeric Materials
✍ Scribed by C. Malveau; D. Grandclaude; D. Canet
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 147 KB
- Volume
- 150
- Category
- Article
- ISSN
- 1090-7807
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✦ Synopsis
T 2 images are obtained by two interleaved B 1 -gradient imaging experiments preceded by CPMG trains of different lengths. The method is assessed by means of a phantom involving compartments of different, though relatively close, T 2 values. T 1 images arise from a previously published procedure also based on two interleaved B 1 -gradient imaging experiments involving different evolution of the longitudinal magnetization. Both types of image appear to be useful in view of the structural characterization of polymer samples through the T 2 and T 1 distribution of a solvent embedded in the material.