1. Computed tomography scanning findings associated with rapid expansion of abdominal aortic aneurysms 
Yehuda G. Wolf, MD, Winston S. Thomas, MD, Frank J. Brennan, MD, Walter G. Goff, MD, Michael J. Sise, MD, Eugene F. Bernstein, MD, PhD 
Journal of Vascular Surgery 
Volume 20, Issue 4, Pages (October 1994)
DOI: / (94)
Copyright © 1994 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

2. Fig. 1
Measurements obtained from CT scan sections. On section with largest aneurysm cross-section, maximal and minimal diameter (irrespective of direction) were measured, as were aneurysm area, lumen area, TARC and thrombus thickness (not shown). Anerusym dimensions were related to juxtarenal diameter (dm 1) and to second vertebral body diameter (vert dm).
Journal of Vascular Surgery  , DOI: ( / (94) )
Copyright © 1994 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

3. Fig. 2
Initial maximal diameter of 80 aneurysms. Sixty-two aneurysm diameters (78%) were between 3.5 and 4.9 cm, and largest aneurysm diameter was 6.1 cm.
Journal of Vascular Surgery  , DOI: ( / (94) )
Copyright © 1994 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

4. Fig. 3
Annual expansion rate of 80 aneurysms. Negative expansion was measured in 10 aneurysms. In only three was this greater than 0.1 cm. Forty-eight aneurysms (60%) expanded by less than 0.3 cm.
Journal of Vascular Surgery  , DOI: ( / (94) )
Copyright © 1994 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

5. Fig. 4
Frequency distribution of aneurysm expansion and mean TARC. Number represents size of aneurysm in cm. It is clear that both TARC and expansion rate are not related to size. Correlation between variables is significant, but fit of data to regression line is poor (r = 0.43, p < 0.001). Most rapid expanders have mean TARC greater than 120 degrees (vertical broken line).
Journal of Vascular Surgery  , DOI: ( / (94) )
Copyright © 1994 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

6. Fig. 5
CT scan sections of two 4.2 abdominal aortic aneurysms. A, Thrombus in aneurysm is circumferential (TARC = 360 degrees) and occupies 78% of aneurysm area. This particular aneurysm expanded at rate of 0.5 cm/year. B, In aneurysm thrombus covers anterior (TARC = 180 degrees) and occupies 19% of aneurysm area. This aneurysm expanded at rate of 0.1 cm/yr.
Journal of Vascular Surgery  , DOI: ( / (94) )
Copyright © 1994 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

7. Fig. 6
Mean expansion rate of aneurysms by mean TARC (open bar – mean TARC greater than 120 degrees; solid bar – mean TARC less than 120 degrees) in subgroups by size. This graph demonstrates that correlation between expansion and mean TARC was not related to aneurysm size, because differences in expansion rates occur within each size group. Because of small number of patients, difference reached statistical significance only in largest subgroup (4 to 5 cm).
Journal of Vascular Surgery  , DOI: ( / (94) )
Copyright © 1994 Society for Vascular Surgery and the North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions