## Abstract A hybrid twoโdimensional relaxometry (2DR) sequence was used to simultaneously measure both the spinโspin (__R__~2~) and spinโlattice relaxation rates (__R__~1~) of skeletal muscle in vivo. The 2DR sequence involved a 180ยฐ inversion pulse followed by a variable delay time (30 values fro
Quantitative Two-Dimensional time Correlation Relaxometry
โ Scribed by A. E. English; K. P. Whittall; M. L. G. Joy; R. M. Henkelman
- Book ID
- 102952406
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 517 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0740-3194
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โฆ Synopsis
Abstract
An experimental and analytical method is presented for obtaining twoโdimensional NMR time correlation spectra of T~1~ and (T~2~ and T~2~) exponential relaxation in heterogeneous samples. The numerical algorithms used in this study do not bias the solution by any a priori assumptions as to the number of required components. The constraints used to overcome the illโposed and illโconditioned nature of this inverse problem are also described. With this method, the correlations of T~1~ (or T~1~) and T~2~ exponential components in systems of nonexchanging standards and rat muscle tissues are obtained. ยฉ 1991 Academic Press, Inc.
๐ SIMILAR VOLUMES
An obvious disanalogy between time and space is that time is onedimensional and space is three-dimensional. A slightly less obvious one is that two-dimensional space is more easily conceivable than twodimensional time. In the addendum of her article 'Time, Space, and Objects', 1 Judith Thomson attem