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In‐vivo measurement of coronary stent dimensions throughout entire vascular segments with quantitative three‐dimensional intravascular ultrasound: a review
Author(s) -
von Birgelen C.,
Haude M.,
Baumgart D.,
Jasper M.,
Brinkhoff J.,
Wieneke H.,
Welge D.,
Altmann C.,
Sack S.
Publication year - 1999
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/(sici)1521-4052(199912)30:12<827::aid-mawe827>3.0.co;2-3
Subject(s) - intravascular ultrasound , medicine , stent , restenosis , radiology , coronary stent , biomedical engineering , cardiology
The implantation of metallic endoprostheses (i. e., stents) is a rapidly expanding interventional technique for the catheter‐based therapy of symptomatic patients with significant coronary stenoses. But stents are frequently radiolucent and after deployment difficult to appreciate on fluoroscopy and coronary angiograms obtained by x‐ray. Intravascular ultrasound (IVUS), on the other hand, permits detailed examination of coronary stent apposition and expansion in vivo. Recently, automated systems for three‐dimensional (3‐D) reconstruction and analysis of IVUS images have been developed. The initial experience with 3‐D IVUS in coronary stenting is positive. Different technical approaches demonstrated superiority of 3‐D IVUS in detecting both, the site of the smallest in‐stent lumen cross‐sectional area and sub‐optimal results following stent deployment. In‐addition, the restenosis process inside stents can excellently be studied with IVUS. In‐stent neointimal ingrowth can be exmined with a computerized 3‐D contour detection system that permits off‐line detection of the neointimal leading edge and the coronary stent struts. This 3‐D approach provides computerized measurement of neointimal volume, based on a large number of IVUS images. Considering the current trend towards more complex coronary stenting procedures, a feasible and reliable 3‐D analysis tool for clinical on‐line assessment after stent deployment may also be very useful.