Fig. 5
From: Material analysis through X-ray attenuation decomposition in spectral computed tomography
CT angiography of carotid arteries of a 77-year-old woman, showing an occlusion in the right carotid artery. In the axial (a) and coronal (b) view, the occlusion is segmented (cyan) and compared to the same location in the left carotid artery (magenta). The corresponding XAD plots show a clear difference in material composition of the right carotid artery (cyan dots in panel c), and left carotid artery (magenta dots in panel d): the voxels of the healthy left carotid artery are all on the iodinated blood line, while the voxels of the occluded right carotid artery show a little iodinated blood, and some calcifications and also a large pool (yellow ellipse) of soft tissue material without iodinated blood or calcium, likely representing thrombus.
