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Abstract #0313

Field-Cycling imaging identifies ischaemic stroke at magnetic field strength below 200 mT

Vasiliki Mallikourti1, James Ross1, Oliver Maier2, Markus Bödenler3, Rudolf Stollberger 4, Lionel Broche1, and Mary-Joan MacLeod5
1Aberdeen Biomedical Imaging Centre, University of Aberdeen, Aberdeen, United Kingdom, 2Institute of Medical Engineering, Graz University of Technology, Graz, Austria, 3Institute of eHealth, University of Applied Sciences FH JOANNEUM, Graz, Austria, 4BioTechMed-Graz, Graz, Austria, 5Institute of Medical Sciences, University of Aberdeen, Aberdeen, United Kingdom


Field-Cycling imaging (FCI) is a new imaging technique able to image over a range of low magnetic field levels by rapid switching, to explore the variations in T1 relaxation time as a function of the magnetic field strength, known as T1 dispersion. Here we measured the T1 dispersion contrast from patients with ischaemic stroke. The infarct region in T1 maps corresponded to clinical images. T1 dispersions had different profiles between stroke areas and healthy brain areas, showing that ischaemic strokes can be imaged below 200 mT without contrast agents.

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