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CT Angiography of Complications in Pediatric Patients Treated with Intravascular Stents

Jeff L. Fidler1, John P. Cheatham2, Scott E. Fletcher2, Ameeta B. Martin2, John D. Kugler2, Carl H. Gumbiner2 and David A. Danford2

1 Department of Radiology, University of Nebraska Medical Center, 981045 Nebraska Medical Center, Omaha, NE 68198-1045.
2 Joint Division of Pediatric Cardiology, University of Nebraska Medical Center and Creighton University at Children's Hospital, 982166 Nebraska Medical Center, Omaha, NE 68198-2166.



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  		Fig. 1A .—16-year-old boy with stent placement for aortic coarctation.

A and B, Conventional angiogram (A) and coronal reformatted CT angiogram (B) reveal contour abnormality at stent site (arrows). Note separation of stent from wall.

 


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  		Fig. 1B .—16-year-old boy with stent placement for aortic coarctation.

A and B, Conventional angiogram (A) and coronal reformatted CT angiogram (B) reveal contour abnormality at stent site (arrows). Note separation of stent from wall.

 


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  		Fig. 2A .—13-year-old boy with stent placement for aortic coarctation. Conventional angiogram reveals eccentric aneurysm or pseudoaneurysm located medially (arrows, A and B).

 


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  		Fig. 2B .—13-year-old boy with stent placement for aortic coarctation. Three-dimensional shaded-surface display reveals similar findings to those in A. Note external contour of aneurysm. Stent—vessel relationship and internal features of vessel are unapparent.

 


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  		Fig. 3A .—14-year-old boy with stent placement for aortic coarctation.

A and B, Initial CT oblique sagittal (A) and axial (B) images reveal contour abnormality (short arrow, A) and small amount of separation along stent (long arrows).

 


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  		Fig. 3B .—14-year-old boy with stent placement for aortic coarctation.

A and B, Initial CT oblique sagittal (A) and axial (B) images reveal contour abnormality (short arrow, A) and small amount of separation along stent (long arrows).

 


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  		Fig. 3C .—14-year-old boy with stent placement for aortic coarctation. Axial CT image from follow-up after stent dilatation reveals improved apposition (arrow).

 


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  		Fig. 4A .—17-year-old boy with history of Williams syndrome.

A-C, Coronal (A) and sagittal (B, C) reformatted CT images reveal narrowing of lower thoracic and upper abdominal aorta. Note narrowing of celiac axis (arrow, B) and superior mesenteric artery (arrow, C).

 


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  		Fig. 4B .—17-year-old boy with history of Williams syndrome.

A-C, Coronal (A) and sagittal (B, C) reformatted CT images reveal narrowing of lower thoracic and upper abdominal aorta. Note narrowing of celiac axis (arrow, B) and superior mesenteric artery (arrow, C).

 


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  		Fig. 4C .—17-year-old boy with history of Williams syndrome.

A-C, Coronal (A) and sagittal (B, C) reformatted CT images reveal narrowing of lower thoracic and upper abdominal aorta. Note narrowing of celiac axis (arrow, B) and superior mesenteric artery (arrow, C).

 


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  		Fig. 5A .—20-year-old woman with three pulmonary artery stents for pulmonary artery stenoses after tetralogy of Fallot repair.

A and B, Axial CT images reveal bridging of stents of main and right pulmonary artery (arrow, A).

 


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  		Fig. 5B .—20-year-old woman with three pulmonary artery stents for pulmonary artery stenoses after tetralogy of Fallot repair.

A and B, In region of stents, note mild narrowing in relation to surrounding vessel and narrowing of right pulmonary artery distal to stent (arrow, B).

 

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