Spin-echo methods for the determination of 31P transverse relaxation times of the ATP NMR signals in vivo

1994 ◽  
Vol 12 (1) ◽  
pp. 121-129 ◽  
Author(s):  
Klaus Straubinger ◽  
Wulf-Ingo Jung ◽  
Michael Bunse ◽  
Otto Lutz ◽  
Klaus Küper ◽  
...  
Keyword(s):  
Spin Echo ◽  
Relaxation Times ◽  
Transverse Relaxation ◽  
Nmr Signals

A pitfall associated with determination of transverse relaxation times of the31P NMR signals of ATP using the Hahn spin-echo

1993 ◽  
Vol 30 (1) ◽  
pp. 138-141 ◽  
Author(s):  
Wulf-Ingo Jung ◽  
Klaus Straubinger ◽  
Michael Bunse ◽  
Stefan Widmaier ◽  
Fritz Schick ◽  
...  
Keyword(s):  
Spin Echo ◽  
Relaxation Times ◽  
Transverse Relaxation ◽  
Nmr Signals

31P Transverse Relaxation Times of the ATP NMR Signals of Human Skeletal Muscle in Vivo

1992 ◽  
Vol 28 (2) ◽  
pp. 305-310 ◽  
Author(s):  
Wulf-Ingo Jung ◽  
Klaus Straubinger ◽  
Michael Bunse ◽  
Fritz Schick ◽  
Klaus Küper ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Human Skeletal Muscle ◽  
Relaxation Times ◽  
Transverse Relaxation ◽  
Nmr Signals

In-vivo Determination of Relaxation Times of Musculoskeletal Relevant Tissue at 1.5 T and 3 T

2005 ◽  
Vol 177 (04) ◽  
Author(s):  
BM Wietek ◽  
J Machann ◽  
P Martirosian ◽  
C Mueller ◽  
CD Claussen ◽  
...  
Keyword(s):  
Relaxation Times

scholarly journals Single spin-echo T 2 relaxation times of cerebral metabolites at 14.1 T in the in vivo rat brain

2013 ◽  
Vol 26 (6) ◽  
pp. 549-554 ◽  
Author(s):  
Lijing Xin ◽  
Giulio Gambarota ◽  
Cristina Cudalbu ◽  
Vladimír Mlynárik ◽  
Rolf Gruetter
Keyword(s):  
Rat Brain ◽  
Spin Echo ◽  
Relaxation Times ◽  
Single Spin ◽  
Cerebral Metabolites

Relaxation of Spin 1/2 in the Scalar Coupled Spin System AMX with Quadrupolar Nuclei in the Presence of Cross-correlation Effects

2004 ◽  
Vol 59 (4-5) ◽  
pp. 217-4
Author(s):  
G. S. Kupriyanova
Keyword(s):  
Spin System ◽  
Cross Correlation ◽  
Relaxation Times ◽  
Formal Theory ◽  
Quadrupolar Nuclei ◽  
Transverse Relaxation ◽  
Selective Determination ◽  
Product Operator ◽  
Dynamic Frequency

We present the formal theory of the nuclear magnetic relaxation of spin ½ A in a scalar coupled spin system AMX with quadrupolar nuclei of spin 1 (M, X) considering cross-correlation relaxation based on second order time-dependent perturbation theory and the product operator formalism. The expressions for longitudinal and transverse relaxation times and dynamic frequency shifts of each component of the spectral pattern are derived. Several experimental schemes for the selective determination of the cross-correlation rate between different spin orders are proposed.

Deuterium MR in Vivo Imaging of the Rat Eye Using 2H2O

1995 ◽  
Vol 36 (4-6) ◽  
pp. 552-555 ◽  
Author(s):  
T. Obata ◽  
H. Ikehira ◽  
F. Shishido ◽  
N. Fukuda ◽  
Y. Ueshima ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Water Movement ◽  
Pulse Sequence ◽  
Signal To Noise Ratio ◽  
Spin Echo ◽  
Dynamic Change ◽  
Intraperitoneal Administration ◽  
Compartment Model

In vivo euterium MR imaging (2H MR) was investigated in rats after intraperitoneal administration of deuterated saline, and a dynamic study of the water movement in rat eyes was performed. Deuterium MR imaging was carried out by means of a gradient-echo (GRE) and a spin-echo (SE) pulse sequence. The rat eye was imaged in 2H MR more selectively by SE than by GRE, but a lower signal-to-noise ratio was obtained in 2H MR imaging using the SE sequence. The MR signal intensity of the rat eye was followed by a 3-compartment model, which enabled determination of the flow rate constant of the water in the eye (0.359/min). Deuterium MR imaging is useful to visualize the dynamic change of water in rat eyes using 2H MR at the same magnetic field (2 T) that can also be used for conventional MR imaging in humans.

In vivo determination of 31P spin relaxation times (T1, T2, T1ϱ) in rat leg muscle. Use of an off-axis solenoid coil

1986 ◽  
Vol 4 (3) ◽  
pp. 245-250 ◽  
Author(s):  
William M. Brooks ◽  
James Field ◽  
Michael G. Irving ◽  
David M. Doddrell
Keyword(s):  
Spin Relaxation ◽  
Relaxation Times ◽  
Solenoid Coil ◽  
Leg Muscle
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