Improved low field magnetic resonance imaging instrumental system and methods of use

A low field Magnetic Resonance Imaging (MRI) instrumental system for imaging a sample placed inside a hollow cylindrical volume through the low field MRI instrumental system, comprising:

• an electromagnetic Radio Frequency (RF) antenna adapted to emit electromagnetic RF pulses for inducing Electron Paramagnetic Resonance—EPR;
• an electromagnetic Low Frequency (LF) antenna (20) for measurements, adapted to emit electromagnetic LF pulses for inducing Nuclear Magnetic Resonance (NMR), respectively to receive LF signal produce by NMR;
• a gradient generator, adapted to create a gradient in a static magnetic field generated during measurements;
• a high field generator adapted to generate, in the hollow cylindrical volume, a strong pre-polarization magnetic field for magnetic pre-polarization;
• and,
• a control/command unit,
• wherein the low field MRI instrumental system further comprises a low field unit adapted to generate, inside the hollow cylindrical volume, a low static magnetic field whose direction is adjustable in any direction in space, a fixed reference frame XYZ being associated with the low field MRI instrumental system so that the direction X coincides with a main axis of the hollow cylindrical volume through the low field MRI instrumental system.