Abstract #3403
            Investigation of Susceptibility Contrast in Grey and White Matter Multiple Sclerosis Lesions
                      Cynthia Wisnieff                     1,2                    , Ryan Brown                     3                    , 						David Pitt                     4                    , and Yi Wang                     1,2          
            
            1
           
           Biomedical Engineering, Cornell University, 
						Ithaca, New York, United States,
           
            2
           
           Radiology, 
						Weill Cornell Medical College, New York, New York, 
						United States,
           
            3
           
           Radiology, 
						New York University, New York, New York, United States,
           
            4
           
           Neurology, 
						Yale University, New Haven, Connecticut, United States
          
            
          This work examines the susceptibility properties of ex 
						vivo MS brain specimens with quantitative susceptibility 
						mapping (QSM). QSM reveals the diamagnetic properties of 
						cortical lesions and increased paramagnetic properties 
						of white matter lesions. Changes in both white matter 
						and grey matter tissue properties are linked to the 
						pathogenic process in multiple sclerosis (MS). This 
						preliminary data demonstrates the ability of QSM to 
						detect WM and GM lesions compared to other gradient echo 
						based methods and assesses changes in susceptibility 
						within both white matter and grey matter lesions 
						compared to normal appearing tissue.
         
				
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