“…For CT examinations of the head, these included acute intracranial hemorrhage and acute cerebral infarction; for CTA-HN, these included intracranial arterial thrombosis, occlusion or high-grade stenosis (> 70%) of the carotid or vertebral arteries, 21 and dural venous sinus thrombosis; for CTPA, these included pulmonary artery emboli; and for CT examinations of the abdomen and pelvis, these included acute appendicitis, diverticulitis, bowel obstructions, ureteric calculi and acute aortic syndrome. [22][23][24] Findings that were incidental and of doubtful clinical significance were not considered as new findings (e.g., brain atrophy and microan gio pathic ischemic change typical for age on CT examinations of the head, mild carotid stenosis [< 30%] on CTA-HN, dependent subsegmental atelectasis and incidental pulmonary nodules < 6 mm on CTPA, and cholelithiasis, diverticulosis and small fat-containing hernias on CT examinations of the abdomen and pelvis).…”