PMC10408621_01
Comparison of standard 1.5 T magnetic resonance imaging (MRI) and ultra-low-field portable MRI (ULF pMRI) Images of a brain tumor. The figure displays the preoperative MRI images of a patient with a brain tumor both obtained using a standard 1.5 T MRI and an ULF pMRI. Initial preoperative images on standard 1.5 T MRI localize a hyperintense lesion on T2 and fluid-attenuated inversion recovery sequences in the right centrum semiovale, involving deep and subcortical white matter with no surrounding edema. ULF pMRI reveals an isointense lesion with a non-specific hypointense rim (white arrow) on T1. The lesion was well-defined with no surrounding edema, or midline shift, nor any pressure effects. These findings were suggestive of low-grade glioma.
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F1
Figure 1 compares both pre and post-operative standard 1.5 T MRI scans against the ULF pMRI scanner. T2, and had hyperintense foci on fluid-attenuated inversion recovery (FLAIR), along with prominent sulci and ventricles [Figure 1].