Figure 7.

(a) Akaike weight maps of two slices of the CT image based on the six levels (configurations) of the vascular tree model. The intensity of each voxel in the images L1 through L6 images show the likelihood of that voxel belonging to that level in the vascular tree. Based on the Akaike method, the sum of the intensities of every voxel across the six images is one. The images on the right column are the CT images of the same slice, a few seconds after injection of the contrast agent. As seen in these CT images, all the major vessels have been enhanced in intensity but there is no distinction between the arteries and veins since they are all enhanced. (b,d) Enlarged images of the two sections of post injection CT images in (a) and (d,e) the delay maps (in seconds) created using our method. ‘R’ is the reference point for measuring the glocal AIF. ‘A’ is the location of one of the main arteries and ‘B’ shows the Superior Sagittal Sinus. ‘T’ shows the location of the tumor.