Artefactual basilar artery stenosis due to metallic stent

Case contributed by Dr Chris O'Donnell

Presentation

Previous history of pontine infarction treated with vascular stent for focal stenosis. New onset of neurological symptoms. ?patency of the stent

Patient Data

Age: 55 years
Gender: Male

Apparent high-grade stenosis in the proximal basilar artery. However, note rim of low signal intensity on the source MRA images and the susceptibility artefact on the SWI study, indicating this represents a metallic stent.

CT

CT angiogram used to assess the stent patency

CT angiogram less affected by metallic artefact shows that the stent is patent especially on the curved MPR (arrow)

Case Discussion

This case demonstrates that MRI artefacts caused by metallic stents can mimic arterial stenosis, while the stent is much more obvious on CT.

PlayAdd to Share

Case information

rID: 31206
Published: 23rd Sep 2014
Last edited: 7th Apr 2018
System: Vascular
Inclusion in quiz mode: Excluded

Updating… Please wait.
Loadinganimation

Alert accept

Error Unable to process the form. Check for errors and try again.

Alert accept Thank you for updating your details.