MDCT Angiography in Abdominal Aortic Aneurysm Treated with Endovascular Repair: Diagnostic Impact of Slice Thickness on Detection of Endoleaks
Roberto Iezzi1,
Antonio Raffaele Cotroneo1,
Antonella Filippone1,
Francesca Di Fabio1,
Marco Santoro1 and
Maria Luigia Storto1
1 All authors: Department of Clinical Science and Bioimaging, Section of
Radiology, University "G. D'Annunzio," Chieti, via dei Vestini,
Chieti, Italy.
Fig. 1A—67-year-old man treated with endovascular aneurysm repair of
abdominal aortic aneurysm. Axial contrast-enhanced images obtained with 1-mm
(A) and 3-mm (B) collimation allow detection of small endoleak
(arrows) beyond graft, as confirmed by standard of reference.
Fig. 1B—67-year-old man treated with endovascular aneurysm repair of
abdominal aortic aneurysm. Axial contrast-enhanced images obtained with 1-mm
(A) and 3-mm (B) collimation allow detection of small endoleak
(arrows) beyond graft, as confirmed by standard of reference.
Fig. 1C—67-year-old man treated with endovascular aneurysm repair of
abdominal aortic aneurysm. Axial contrast-enhanced image obtained with 5-mm
collimation was incorrectly interpreted as negative for endoleak (score of 1,
false-negative).
Fig. 2A—74-year-old woman treated with endovascular aneurysm repair
of abdominal aortic aneurysm. Axial contrast-enhanced images obtained with
collimation of 1 (A), 3 (B), and 5 (C) mm. Medium-sized
endoleak (arrows) was easily detected on images. Finding was
confirmed by standard of reference (true-positive).
Fig. 2B—74-year-old woman treated with endovascular aneurysm repair
of abdominal aortic aneurysm. Axial contrast-enhanced images obtained with
collimation of 1 (A), 3 (B), and 5 (C) mm. Medium-sized
endoleak (arrows) was easily detected on images. Finding was
confirmed by standard of reference (true-positive).
Fig. 2C—74-year-old woman treated with endovascular aneurysm repair
of abdominal aortic aneurysm. Axial contrast-enhanced images obtained with
collimation of 1 (A), 3 (B), and 5 (C) mm. Medium-sized
endoleak (arrows) was easily detected on images. Finding was
confirmed by standard of reference (true-positive).