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- Title
On the correlation between T<sub>2</sub> and tissue diffusion coefficients in exercised muscle: quantitative measurements at 3T within the tibialis anterior.
- Authors
Zaid Ababneh; Riad Ababneh; Stephan Maier; Carl Winalski; Koichi Oshio; Anas Ababneh
- Abstract
Abstract Purpose To assess the transverse relaxation time T2 and diffusion coefficient D before and following exercise in the tibialis anterior muscle and determine whether T2 and D values were correlated. Methods Measurements of T2 and D were performed at 3 T within axial slices through the calf muscles of six healthy volunteers at 95 s intervals before and for 10–12 min after a dorsiflexion exercise to exhaustion. Results The mean ± standard deviation (SD) of T2 and D before exercise were 32 ± 1.55 ms and 1.52 ± 0.15 μm2/ms, and after exercise were 43 ± 2.5 ms and 1.72 ± 0.13 μm2/ms, respectively. The mean ± SD inter-individual recovery times of the % change in T2 and D after exercise were 7.9 ± 4.2 and 10.9 ± 7.0 min, respectively. The T2 and D values showed a significant correlation throughout the experiments (r 2 = 0.45). Conclusions The increase in T2 of skeletal muscle after exercise is correlated with the increase of the diffusion coefficient D and the recovery times appear similar, indicating that any model used to explain T2 increases with exercise must also account for increased diffusion coefficients.
- Subjects
SOLID solutions; SEMICONDUCTOR doping; SEMICONDUCTOR defects; DIFFUSION
- Publication
MAGMA: Magnetic Resonance Materials in Physics, Biology & Medicine, 2008, Vol 21, Issue 4, p273
- ISSN
0968-5243
- Publication type
Article
- DOI
10.1007/s10334-008-0120-8