Principle

The fundamental principles concerning the phenomenon of nuclear magnetic resonance (NMR) are demonstrated. Experiments are executed with a MRT training device giving the opportunity to investigate some small probes in the sample chamber. Investigations comprise the tuning of the system frequency to the Larmor frequency, the determination of the flip angle of the magnetisation vector, the effects of the substance quantity, the influence of particular magnetic field inhomogeneities, the measurement of a spin echo signal and an averaging procedure to maximise the signal-to-noise ratio. The adjustment of all parameters in these experiments are inevitable to obtain an adequate MR image in other experiments which can be performed with the same system without requiring any additional components.

Benefits


Complete, easy to install and affordable MRT education system

One system to cover all aspects from NMR basics to sophisticated 2D and 3D imaging sequences

Detailed experiment guides included with the system

Learning results guaranteed thanks to easy to manage course steps

Can be set up at any location in the student lab


Tasks


Tune the system frequency to the Larmor frequency

Set the HF (High Frequency) pulse duration to determine the flip angle of the magnetisation vector

Determine effects of the substance quantity on the FID signal (Free Induction Decay) amplitude

Minimise magnetic field inhomogeneities via a superimposed magnetic field (shim)

Retrieve a relaxated FID signal via a spin echo flipping nuclear spins by 180°

Improve the signal-to-noise ratio (SNR) of the FID signal


What you can learn about


Nuclear spins

Atomic nuclei with a magnetic moment

Precession of nuclear spins

Magnetisation

Resonance condition, MR frequency

MR flip angle

FID signal (Free Induction Decay)

Spin echo

Relaxation times (T1: longitudinal magnetisation, T2: transverse magnetisation)

Signal-to-noise ratio


Software included. Computer not provided.