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Characterization of Balloon Expandable Coronary Stent Morphology Using Electron Beam Computed Tomography
Author(s) -
Möhlenkamp S.,
Schmermund A.,
Pump H.,
Baumgart D.,
Haude M.,
Grönemeyer D. H. W.,
Seibel R. M. M.,
Schwartz R. S.,
Erbel R.
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<793::aid-mawe793>3.0.co;2-w
Subject(s) - nuclear medicine , stent , materials science , calipers , coronary arteries , biomedical engineering , scanner , tomography , medicine , radiology , artery , optics , physics , surgery
Minimally invasive visualization of coronary arteries is a new application of fast CT technology. This study evaluates the ability of electron beam computed tomography (EBCT) to characterize coronary stent morphology in vitro which should prove useful for further minimally‐invasive imaging of coronary stents in the clinical setting. We scanned six coronary stents – JOSTENT‐M, NIR, Palmaz‐Schatz, Micro, Wiktor and Gianturco‐Roubin (GRII) – in vitro with an EBCT scanner, with a slice thickness of 1.5 mm. Image intensity values and intensity profiles were studied at different diameters. EBCT lengths and diameters were compared to caliper measurements. These experiments demonstrated a significant difference between EBCT image intensities between the stents at equal diameters. Stent image intensities decreased significantly with increasing diameters. The mean differences between the EBCT and caliper measurements for the length and diameter were 0.17 ± 0.18 mm and − 0.32 ± 0.25 mm, respectively. Typical image intensity profiles for the different stent types were identified. This is the first study that identified characteristic morphology CT features of different coronary stents.