Dual-source dual-energy CT: dose reduction after endovascular abdominal aortic aneurysm repair View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2014-07-02

AUTHORS

Vitaliano Buffa, Antonio Solazzo, Valeria D’Auria, Alessandra Del Prete, Andrea Vallone, Monica Luzietti, Manuela Madau, Roberto Grassi, Vittorio Miele

ABSTRACT

PurposeThis study was done to evaluate the possibility of reducing the dose of ionising radiation by using dual-source dual-energy computed tomography (CT) in patients undergoing CT angiography of the aorta to search for endoleaks after endovascular aneurysm repair (EVAR).Materials and methodsOne hundred and forty-eight patients (117 M, 31 F; mean age 75 ± 6.5) underwent 171 CT angiography scans for follow-up after EVAR. For each patient we performed a triple-phase acquisition protocol consisting of a nonenhanced phase, an arterial phase and a delayed phase; the latter acquired in dual energy. Two radiologists jointly evaluated the nonenhanced, arterial and delayed phase, and a third radiologist evaluated only the delayed phase and its virtual noncontrast (VNC) reconstruction. Moreover, we compared the cumulative effective doses of the triple-phase acquisition with the dual-energy acquisition.ResultsWe detected 34 endoleaks (19.8 %), with 100 % agreement between the triple-phase and dual-energy acquisitions. The effective dose of dual-energy acquisition performed during the delayed phase was 61.7 % lower than that of the triple-phase acquisition.ConclusionsA dual-energy CT scan acquired during the delayed phase and its VNC reconstruction allow detection of endoleaks with a substantial reduction of effective dose and a complete diagnostic agreement with a triple-phase acquisition protocol. More... »

PAGES

934-941

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s11547-014-0420-1

DOI

http://dx.doi.org/10.1007/s11547-014-0420-1

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1029012874

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/24985136


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