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Abstract #0603

Multi-Spectral MRI Shows Unorganized Thrombus One Year After Endovascular Abdominal Aortic Aneurysm Repair.

Sandra Adriana Cornelissen1,2, Maarten J. van der Laan3, Koen L. Vincken4, Frans L. Moll3, Willem P. Mali1, Max A. Viergever2, Lambertus W. Bartels2

1Radiology, UMC Utrecht, Utrecht, Netherlands; 2Image Sciences Institute, UMC Utrecht, Utrecht, Netherlands; 3Vascular Surgery, UMC Utrecht, Utrecht, Netherlands; 4Image Sciences Institute, UMC Utrecht, Netherlands

Not all aneurysms without endoleak after endovascular abdominal aortic aneurysm repair (EVAR) shrink. In such cases it is unclear whether EVAR has been successful. Therefore it is important to further investigate this phenomenon. Apparently, more parameters are needed to evaluate treatment success. We present the first results of longitudinal monitoring of thrombus organization in patients after EVAR using multispectral MRI. Surprisingly, one year after EVAR unorganized thrombus is still present in the non-luminal aneurysm sac. Its etiology and significance is currently investigated in a larger population.