Design and test of an Open Portable MRI System

Simon Chauvière (1) , Lamia Belguerras (1) , Thierry Lubin (1) , Smail Mezani (1)

1 GREEN - Groupe de Recherche en Energie Electrique de Nancy

In this work, a design study and realization of Portable Low-Field open MRI System is proposed. The design of the MRI system is based on an optimization study using a genetic algorithm. Non-linear 2D and 3D numerical electromagnetic models are developed and inserted in the optimization environment. A prototype of the optimized topology is manufactured and tested. 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 % (28000 ppm) over 100 mm Diameter Sphere Volume (DSV). The z-axis gradient coils are capable of generating switching gradients with amplitude of 8 mT/m and frequency of 1.2 kHz

Mots clés: MRI design; Finite elements modelling; Permanent magnets; Optimization

Domaines: Energie électrique; Imagerie

Simon Chauvière, Lamia Belguerras, Thierry Lubin, Smail Mezani. Design and test of an Open Portable MRI System. 20th International Symposium on Electromagnetic Fields in Mechatronics, Electrical and Electronic Engineering, ISEF 2021, Sep 2021, Cracovie, Poland. ⟨hal-03445464⟩