Design and test of an open portable MRI system

• Simon Chauviere ^[1] ; Lamia Belguerras ^[1] ; Thierry Lubin ^[1] ; Smail Mezani ^[1]
  1. [1] University of Lorraine

     University of Lorraine

     Arrondissement de Nancy, Francia

     
• Localización: Compel: International journal for computation and mathematics in electrical and electronic engineering, ISSN 0332-1649, Vol. 41, Nº 4, 2022, págs. 1084-1095
• Idioma: inglés
• Enlaces
  • Texto completo
• Resumen

  • Purpose – The purpose of this paper is the design study and realisation of portable low-field open MRI system.

    Design/methodology/approach – The design of the magnetic resonance imaging (MRI) system is based on an optimization study using a genetic algorithm. Non-linear two-dimensional and threedimensional numerical electromagnetic models are developed and inserted in the optimization environment.

    Findings – The results are found to be consistent with those issued from fully experimental tests. The static field produced by the device is 0.295 T with a homogeneity of 2.8% (28,000 ppm) over 100 mm diameter sphere volume. The z-axis gradient coils are capable of generating switching gradients with an amplitude of 8 mT/m and a frequency of 1.2 kHz.

    Originality/value – Our system is an open portable MRI which can be used in an ambulance. The open topology permits an easy access into the lateral sides when a surgery using surgical instrument with video feedback is needed.