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Abstract #2987

in vivo and ex vivo Multimodal Characterisation of Human Carotid Artery Atherosclerosis Plaques.

Mohamed Tachrount1, Fiona Kennedy1, David A. Doig1, Matthew Adams1, Tarek A. Yousry1, Xavier Golay2, David L. Thomas1, Rolf H. Jager1

1Department od brain repair and rehabilitation, UCL Institute of Neurology, London, United Kingdom; 2Department od brain repair and rehabilitation, University College London, London, United Kingdom

Plaque ulceration, thrombosis and intraplaque haemorrhage are the main causes of stroke and clinical symptoms of atherosclerosis. In addition to the degree of luminal narrowing, characterisation of the plaque composition and ultrastructure is important for the assessment of stroke risk. Ex vivo MRI at very high magnetic field allows for detailed assessment of the plaques components. In this multimodal study, ex vivo plaque contrast and relaxation characteristics were analysed based on high spatial resolution images and compared to in vivo MRI and CT images.

Keywords

acquisition addition agents allowing allows angiography applied approaches array arrows artery assessed assessment atherosclerosis avoid axial basis biomedical blue brain bright calcification calcified cardiovascular carotid causes channel characteristics circulation clinical clinics close closest coil complementary components composition comprehensive contrast correlated correspond dark degree designed detailed developed dimension displayed distal distinguished easily encoding enhanced fast feathering fibrous field fitted fixed flight formalin furthermore gradient helping histological house human identification immersed important in vivo indicated institute irregular kingdom long longest lumen made manual mapping matching material matrix might mixed morphology narrowing native neurology patient patients perspectives phys pilot plaque plaques positioning post preliminary preparation program quantitative radiology rapid readout receive rehabilitation removal reorientated repair represent representative resolution restricted risk samples saturation scanned scanner scanners scanning selected serve shimming short slice slices soft spat spatial specificity spin stroke structure studies susceptibility symptoms targeted technologies thrombosis translation transmit ulceration ultrasound ultrastructure underwent useful volume wide