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Figure 1 Mean TBR Values at First and Second Scan

Error bars indicate standard deviation. Little spontaneous change in tissue-to-background ratio (TBR) values between the two scans is noted. *p < 0.05 for the TBR of both left and right carotid artery compared with the TBR of all aortic regions. Abd = abdominal; Asc = ascending; Desc = descending.