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T1ρ, dispersion imaging and volume-selective Tlρ dispersion weighted NMR spectroscopy

✍ Scribed by E. Rommel; R. Kimmich

Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
518 KB
Volume
12
Category
Article
ISSN
0740-3194

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✦ Synopsis

Pulse sequences which permit imaging and volume-selective determination of parameters characterizing the frequency dependence of the spin-lattice relaxation time in the rotating frame, T,,, are presented. The contrasts are due to slowly moving macromolecules or paramagnetic contrast agents. In vivo test experiments were carried out with tumorous mice treated with a contrast agent. It is shown that the contrast effect is dramatically enhanced in T I , dispersion images compared with images weighted by any of the relaxation times.

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