Abstract #3557

Very low field MRI setup for brain imaging

Reina AYDE¹ and Claude Fermon¹

¹SPEC, CEA, CNRS, Université Paris-Saclay, Gif-sur-Yvette, France

Mixed sensors are at present competitive with classical tuned coils for the detection of MRI signals on a very low field range. A very low field head MRI system is developed without pre-polarization technique nor magnetic shielding room. Homogeneity of the system and gradients were characterized. A homogeneity of 115 ppm was achieved in a quasi-open configuration. Linearity of the gradients was verified. The amplitude of each gradient was 100 times lower than at high field but sufficiently high to achieve a resolution of 2 mm x 2 mm x 2 mm.

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