Reproducibility of spin lattice relaxation time (T1) measurement using an 0.08 tesla MD 800 magnetic resonance imager.
The reproducibility of T1 measurements using an MD 800 magnetic resonance imager operating at 0.08 T (3.4 MHz) has been assessed by repeated imaging over a 15-week period of a phantom containing six copper-sulphate solutions of different dilutions. The standard pulse sequence of this scanner with an inversion time of 200 ms and a repetition time of 1 s was used. Reproducibility was excellent for the lower T1 range (less than 350 ms), but greater variability was observed at higher T1 values (greater than 490 ms). A linear relationship between T1 and temperature has been demonstrated and a method for standardising T1 values obtained at different temperatures is described.
D009682:Magnetic Resonance Spectroscopy / Q000295:instrumentation / Q000379:methods*