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- Title
Evaluation of angiography as the sole imaging study for the proximal aortic neck prior to EVAR.
- Authors
Badger, Stephen A.; Arya, Nityanda; Loan, William; Soong, Chee V.
- Abstract
Background: Angiographic assessment is an alternative to computerised tomography (CT) prior to endovascular aneurysm repair (EVAR). We evaluated angiography in aortic neck morphology assessment as an alternative investigation. Methods: Patients admitted for elective or emergency EVAR were assessed by pre-operative CT and intra-operative angiography. The proximal and distal aortic neck diameters, and neck length were measured. Measurements were expressed as median (95% CI). Results: 35 patients (20 male) were assessed from August 2003 to January 2005 for elective (26) and emergency (9) EVAR. In the overall group, the proximal neck diameter was 22.0mm (21.0-23.0) on CT, and 20.7mm (19.3-22.3) on angiography. The distal neck diameter was 23.0mm (22.0-24.0) on CT, and 22.3mm (20.3-24.6) on angiography, while the neck length was only slightly greater on angiography [23.0mm (17.5-28.4)] relative to CT [23.0mm (20.0-28.0)]. The stent-grafts deployed were oversized by 26.8% (± 14.8%) relative to the CT measurements, and 33.7% (± 15.6%) relative to angiographic measurements. Good correlation was found for all three measurements between CT and angiography. Conclusions: Angiography alone is inadequate for endovascular aneurysm repair. Although it has timesaving potential, the accuracy achieved is not sufficient to use alone.
- Subjects
ANGIOGRAPHY; TOMOGRAPHY; ENDOVASCULAR surgery; ABDOMINAL aorta surgery; AORTIC aneurysms
- Publication
Ulster Medical Journal, 2009, Vol 78, Issue 3, p166
- ISSN
0041-6193
- Publication type
Article