Appearance of Vascular Stents in Computed Tomographic Angiography: In Vitro Examination of 14 Different Stent Types

Strotzer M, Lenhart M, Butz B, et al. Appearance of vascular stents in computed tomographic angiographyIn vitro examination of 14 different stent types. Invest Radiol 2001; 36:652–658. RATIONALE AND OBJECTIVES. To evaluate the appearance of the vessel lumen after implantation of different vascular s...

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Bibliographic Details
Published in:	Investigative radiology Vol. 36; no. 11; pp. 652 - 658
Main Authors:	STROTZER, MICHAEL, LENHART, MARKUS, BUTZ, BERHARD, VÖLK, MARKUS, MANKE, CHRISTOPH, FEUERBACH, STEFAN
Format:	Journal Article
Language:	English
Published:	United States Lippincott Williams & Wilkins, Inc 01-11-2001
Subjects:	Angiography Phantoms, Imaging Stents Tomography, X-Ray Computed Vascular Patency
Online Access:	Get full text
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Summary:	Strotzer M, Lenhart M, Butz B, et al. Appearance of vascular stents in computed tomographic angiographyIn vitro examination of 14 different stent types. Invest Radiol 2001; 36:652–658. RATIONALE AND OBJECTIVES. To evaluate the appearance of the vessel lumen after implantation of different vascular stents with the use of a computed tomographic (CT) angiography model. METHODS.A vascular phantom was studied with helical CT and different slice thicknesses (2 and 3 mm) and pitch values (1.0, 1.5, and 2.0). Original transverse CT images and coronal reformations were evaluated. Fourteen different stents were analyzed with regard to changes in the stent lumen (attenuation values, noise, and artificial lumen narrowing). RESULTS.Some stents caused artifacts resulting in potential errors during evaluation of their patency. Assessment of the lumen was impaired in two stents (Strecker tantalum and Passager). Increased attenuation values were measured in all stents (increase of 8%–145%). The degree of artificial lumen narrowing was 4.4% to 77.8%. CONCLUSIONS.In most stents, reliable evaluation of the stent lumen seems possible. However, knowledge of the artifacts caused by different stent types is useful for the assessment of stent patency with CT angiography.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0020-9996 1536-0210
DOI:	10.1097/00004424-200111000-00005