Abstract #5007

Quantitative assessment of melanoma metastases at 7T: Susceptibility and T1 mapping

Sina Straub¹, Frederik B. Laun^1,2, Martin T. Freitag³, Heinz-Peter Schlemmer³, Mark E. Ladd¹, and Till M. Schneider^3,4

¹Medical Physics in Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, ²Radiology, University Hospital Erlangen, Erlangen, Germany, ³Radiology, German Cancer Research Center (DKFZ), Heidelberg, Germany, ⁴Neuroradiology, University of Heidelberg, Heidelberg, Germany

Susceptibility values and T1 values of melanoma metastases measured at 7T are shown. There is an ongoing discussion about whether melanin or hemorrhage dominate the contrast mechanisms observed in melanoma metastases. Susceptibility maps as well as T1 maps benefit from the high contrast and high resolution available at 7T, though we observed paramagnetic susceptibility in areas corresponding to vessels or hemorrhagic events, but no general relation between susceptibility values and T1 values of individual metastases

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