Duplex ultrasound and computed tomography angiography in the follow-up of endovascular abdominal aortic aneurysm repair: a comparative study
AA Cantador, DED Siqueira, OB Jacobsen… - Radiologia …, 2016 - SciELO Brasil
AA Cantador, DED Siqueira, OB Jacobsen, J Baracat, IMR Pereira, FH Menezes…
Radiologia Brasileira, 2016•SciELO BrasilObjective: To compare duplex ultrasound and computed tomography (CT) angiography in
terms of their performance in detecting endoleaks, as well as in determining the diameter of
the aneurysm sac, in the postoperative follow-up of endovascular abdominal aortic
aneurysm repair. Materials and Methods: This was a prospective study involving 30 patients
who had undergone endovascular repair of infrarenal aortoiliac aneurysms. Duplex
ultrasound and CT angiography were performed simultaneously by independent …
terms of their performance in detecting endoleaks, as well as in determining the diameter of
the aneurysm sac, in the postoperative follow-up of endovascular abdominal aortic
aneurysm repair. Materials and Methods: This was a prospective study involving 30 patients
who had undergone endovascular repair of infrarenal aortoiliac aneurysms. Duplex
ultrasound and CT angiography were performed simultaneously by independent …
Objective
To compare duplex ultrasound and computed tomography (CT) angiography in terms of their performance in detecting endoleaks, as well as in determining the diameter of the aneurysm sac, in the postoperative follow-up of endovascular abdominal aortic aneurysm repair.
Materials and Methods
This was a prospective study involving 30 patients who had undergone endovascular repair of infrarenal aortoiliac aneurysms. Duplex ultrasound and CT angiography were performed simultaneously by independent radiologists. Measurements of the aneurysm sac diameter were assessed, and the presence or absence of endoleaks was determined.
Results
The average diameter of the aneurysm sac, as determined by duplex ultrasound and CT angiography was 6.09 ± 1.95 and 6.27 ± 2.16 cm, respectively. Pearson's correlation coefficient showing a statistically significant correlation (R = 0.88; p < 0.01). Comparing the duplex ultrasound and CT angiography results regarding the detection of endoleaks, we found that the former had a negative predictive value of 92.59% and a specificity of 96.15%.
Conclusion
Our results show that there is little variation between the two methods evaluated, and that the choice between the two would have no significant effect on clinical management. Duplex ultrasound could replace CT angiography in the postoperative follow-up of endovascular aneurysm repair of the infrarenal aorta, because it is a low-cost procedure without the potential clinical complications related to the use of iodinated contrast and exposure to radiation.
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