Krishna Surapaneni1, Craig Horenstein2, Tian Liu3, Cynthia Wisnieff3, Yi Wang4, Robert DeLaPaz2
1Radiology, Columbia University , New York, NY, United States; 2Radiology, Columbia University, New York, NY, United States; 3Biomedical Engineering, Cornell University, Ithaca, NY, United States; 4Radiology, Cornell University, NY, United States
Quantitative susceptibility mapping (QSM) is an MRI technique that can determine inherent susceptibility properties of tissues, independent of MRI scan parameters. QSM was performed on 10 patients with primary intracranial tumors; QSM provided complimentary information about the tumors not readily available on conventional SWI images or ADC maps. In this pilot study, the relative change in intratumoral QSM values significantly correlated with histologic tumor grade (r=-0.66, p=0.3). This correlation may reflect differences in magnetic properties of the local tumor microenvironment.