High-resolution ex vivo imaging of coronary artery stents using 64-slice computed tomography--initial experience

European Radiology
C RistC Becker

Abstract

The aim of the study was to evaluate the potential of new-generation multi-slice computed tomography (CT) scanner technology for the delineation of coronary artery stents in an ex vivo setting. Nine stents of various diameters (seven stents 3 mm, two stents 2.5 mm) were implanted into the coronary arteries of ex vivo porcine hearts and filled with a mixture of an iodine-containing contrast agent. Specimens were scanned with a 16-slice CT (16SCT) machine; (Somatom Sensation 16, Siemens Medical Solutions), slice thickness 0.75 mm, and a 64-slice CT (64SCT, Somatom Sensation 64), slice-thickness 0.6 mm. Stent diameters as well as contrast densities were measured, on both the 16SCT and 64SCT images. No significant differences of CT densities were observed between the 16SCT and 64SCT images outside the stent lumen: 265+/-25HU and 254+/-16HU (P=0.33), respectively. CT densities derived from the 64SCT images and 16SCT images within the stent lumen were 367+/-36HU versus 402+/-28HU, P<0.05, respectively. Inner and outer stent diameters as measured from 16SCT and 64SCT images were 2.68+/-0.08 mm versus 2.81+/-0.07 mm and 3.29+/-0.06 mm versus 3.18+/-0.07 mm (P<0.05), respectively. The new 64SCT scanner proved to be superior in the ex vi...Continue Reading

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Citations

Jan 9, 2007·European Radiology·Tiziano SchepisPhilipp A Kaufmann
Apr 24, 2008·AJR. American Journal of Roentgenology·Joachim G EichhornFrederick R Long
Jul 7, 2009·EuroIntervention : Journal of EuroPCR in Collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology·Juan F GranadaErling Falk
May 23, 2014·Journal of cardiology·Masayuki YoshimuraMasafumi Yano
Mar 31, 2015·Circulation Journal : Official Journal of the Japanese Circulation Society·Takuma TsudaToyoaki Murohara
Aug 21, 2007·International Journal of Cardiology·David A HalonBasil S Lewis
Dec 2, 2006·Academic Radiology·Carsten RistChristoph R Becker
Sep 25, 2008·Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions·Joachim G EichhornJohn P Cheatham
Oct 6, 2014·The American Journal of Cardiology·Wesley T O'NealElsayed Z Soliman
Nov 29, 2007·Journal of Computer Assisted Tomography·Shigeru SuzukiTadanori Aizawa
May 5, 2009·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Shigeru SuzukiKumiko Konno
Apr 2, 2008·Journal of Computer Assisted Tomography·Shigeru SuzukiTadanori Aizawa

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