DynaCT in Pre-treatment Evaluation of Aortic Aneurysm before EVAR

Abstract Objective DynaCT® is a method for obtaining computed tomography (CT)-like images using a C-arm system. Our aim was to compare the accuracy of these images to multidetector CT (MDCT) images prior to endovascular aortic repair (EVAR). Methods A non-consecutive group of 20 elective patients we...

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Bibliographic Details
Published in:European journal of vascular and endovascular surgery 2011-09, Vol.42 (3), p.332-339
Main Authors: Eide, K.R, Ødegård, A, Myhre, H.O, Hatlinghus, S, Haraldseth, O
Format: Article
Language:English
Subjects:
AAA
Aged
Aged, 80 and over
Aortic Aneurysm, Abdominal - diagnostic imaging
Aortic Aneurysm, Abdominal - surgery
Blood Vessel Prosthesis Implantation
Cone-beam CT
DynaCT
Endovascular Procedures
EVAR
Female
Humans
Imaging
Male
Middle Aged
Preoperative Care
Prospective Studies
Rotational angiography
Stents
Surgery
Tomography, X-Ray Computed - methods
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Summary:Abstract Objective DynaCT® is a method for obtaining computed tomography (CT)-like images using a C-arm system. Our aim was to compare the accuracy of these images to multidetector CT (MDCT) images prior to endovascular aortic repair (EVAR). Methods A non-consecutive group of 20 elective patients were prospectively exposed to MDCT and one additional DynaCT before EVAR. Six arterial measurements and nine anatomical areas were chosen to: (1) visualise the peri-aortic soft tissue and assess the possibility to diagnose a potential haemorrhage from a ruptured aneurysm and (2) make the pre-treatment measurements before insertion of stent graft. Differences between modalities and readers were statistically compared using a linear mixed model. Results For maximum aortic diameter, a significant difference of 1.3 mm was found between techniques ( p  = 0.043). Visibility scores were significantly better for all areas in MDCT data. Pre-treatment evaluation with DynaCT before EVAR was possible for all areas; evaluation of the iliac arteries were suboptimal due to a limited imaging volume size. Significant inter-reader differences were found for all anatomical areas. Conclusion The result indicates that DynaCT gives sufficient information to determine the correct treatment and for selecting the proper stent graft before EVAR. A limited volume size reduces the evaluation of the iliac arteries.
ISSN:1078-5884
1532-2165
DOI:10.1016/j.ejvs.2011.05.014