scholarly journals Balanced spin‐lock preparation for B 1 ‐insensitive and B 0 ‐insensitive quantification of the rotating frame relaxation time T 1ρ

2020 ◽  
Author(s):  
Maximilian Gram ◽  
Michael Seethaler ◽  
Daniel Gensler ◽  
Johannes Oberberger ◽  
Peter M. Jakob ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Rotating Frame ◽  
Spin Lock ◽  
Rotating Frame Relaxation

Longitudinal rotating frame relaxation time measurements in infarcted mouse myocardium in vivo

2012 ◽  
Vol 69 (5) ◽  
pp. 1389-1395 ◽  
Author(s):  
Haja-Sherief N. Musthafa ◽  
Galina Dragneva ◽  
Line Lottonen ◽  
Mari Merentie ◽  
Lyubomir Petrov ◽  
...  
Keyword(s):  
Relaxation Time ◽  
Rotating Frame ◽  
Rotating Frame Relaxation

Proton Rotating Frame Relaxation in Lithium Hydrazinium Sulfate, Li(N2H5)SO4

1971 ◽  
Vol 49 (7) ◽  
pp. 870-875 ◽  
Author(s):  
R. R. Knispel ◽  
H. E. Petch
Keyword(s):  
Activation Energy ◽  
Relaxation Time ◽  
Temperature Dependence ◽  
Rotating Frame ◽  
Kcal Mole ◽  
Second Moment ◽  
Rotating Frame Relaxation ◽  
And Diffusion

The temperature dependence of the rotating frame relaxation time T1ρ for protons in powdered lithium hydrazinium sulfate, Li(N2H5)SO4, has been determined from 140 to 495 °K. These measurements indicate that the –NH2 part of the N2H5+ ion executes 180° flips about the bisectrix of the H–N–H angle with activation energy of 10.7 ± 0.5 kcal/mole. Evidence for motion of the entire N2H5+ ion with activation energy of 17.4 ± 1.1 kcal/mole was also obtained. Separate reorientation and diffusion motions of the N2H5+ ion could not be distinguished, although evidence that the N2H5+ motion detected in the T1ρ measurements includes diffusion is obtained by comparing the T1ρ results with the temperature dependence of the proton second moment.

Measurement of Longitudinal and Rotating Frame Relaxation Times through Fully J-Decoupled Homonuclear Spectra

1999 ◽  
Vol 140 (1) ◽  
pp. 250-258 ◽  
Author(s):  
F. Guenneau ◽  
P. Mutzenhardt ◽  
D. Grandclaude ◽  
D. Canet
Keyword(s):  
Relaxation Times ◽  
Rotating Frame ◽  
Rotating Frame Relaxation
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