Improved assessment and treatment of abdominal aortic aneurysms: the use of 3D reconstructions as a surgical guidance tool in endovascular repair.
BACKGROUND
Endovascular repair is fast becoming the treatment of choice for abdominal aortic aneurysms in anatomically suitable patients. 3D reconstructions not only aid conventional 2D measurements but also allow further analyses of the vessel anatomy.


METHODS
Computed tomography scan data for four male patients awaiting endovascular repair were obtained. 3D reconstructions were performed to determine measurements. Wall stress was determined on one particular case using finite element analysis.


RESULTS
3D reconstruction allows measurements to be obtained that can be difficult to determine using 2D images. This method complements traditional 2D approaches. Reconstructions also provided imaging of potential anatomical problems. Wall stress results showed key regions that may be possible rupture sites.


CONCLUSIONS
3D reconstructions greatly aid surgical planning. As stent-graft devices evolve, anatomical difficulties previously considered contraindications to endovascular repair can now be overcome with careful planning. 3D reconstruction is a useful adjunct to assessment and planning of endovascular repair.
Doyle
B J
BJ
Department of Mechanical and Aeronautical Engineering, Materials and Surface Science Institute, University of Limerick, Centre for Applied Biomedical Engineering Research, Limerick, Ireland. barry.doyle@ul.ie
Grace
P A
PA
Kavanagh
E G
EG
Burke
P E
PE
Wallis
F
F
Walsh
M T
MT
McGloughlin
T M
TM