A CT scan 64-slice angiogram would be an alternative but for someone your young age doctors may be against the procedure due radiation exposure. The procedure includes assessment of the AV, aortic root, ascending, arch and decreasing aorta. Sensitivity is good with MRI and MRA if the software package is designed to image structures. MRI generally has the highest sensitivity of the imaging modalities, with similar specificity to CT and TEE.
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