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Proceedings Paper

Effect of catheter eccentricity on appearance of stent struts in IV-OCT images in presence of thick neointimas
Author(s): Sahar Elahi; Marc D. Feldman; Jouke Dijkstra; Thomas E. Milner
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Paper Abstract

Effect of catheter eccentricity on the appearance of stent struts in IV-OCT images in presence of thick neointimas was examined by simulation of light-stent interaction. A phantom blood vessel was constructed from a mix of polydimethylsiloxane (PDMS) and titanium dioxide to simulate the elastic and optical scattering properties of the arterial wall. A Cordis CYPHER® sirolimus-eluting stent was deployed within the phantom vessel and high resolution Micro-CT images of the stent strut were recorded to create a three-dimensional representation. Simulation of IV-OCT catheter and reflection of light from the stent strut and neointima was implemented for different catheter eccentricities. An optical model of the IV-OCT catheter was constructed and IV-OCT images corresponding to rotation of the light beam over the stent strut were simulated. The measured parameters included intensity and optical path length of light reflecting from the stent strut and coupled into catheter. The results indicate that in presence of thick neointimas sunflower effect is not observed and neointimal thickness measurement using IV-OCT is consistent with true values irrespective of catheter eccentricity.

Paper Details

Date Published: 8 March 2013
PDF: 4 pages
Proc. SPIE 8565, Photonic Therapeutics and Diagnostics IX, 856540 (8 March 2013); doi: 10.1117/12.2005668
Show Author Affiliations
Sahar Elahi, The Univ. of Texas at Austin (United States)
Marc D. Feldman, The Univ. of Texas Health Science Ctr. at San Antonio (United States)
Jouke Dijkstra, Leids Univ. Medisch Ctr. (Netherlands)
Thomas E. Milner, The Univ. of Texas at Austin (United States)

Published in SPIE Proceedings Vol. 8565:
Photonic Therapeutics and Diagnostics IX
Andreas Mandelis; Brian Jet-Fei Wong; Anita Mahadevan-Jansen; Henry Hirschberg M.D.; Hyun Wook Kang; Nikiforos Kollias; Melissa J. Suter; Kenton W. Gregory M.D.; Guillermo J. Tearney M.D.; Stephen Lam; Bernard Choi; Steen J. Madsen; Bodo E. Knudsen M.D.; E. Duco Jansen; Justus F. Ilgner M.D.; Haishan Zeng; Matthew Brenner; Laura Marcu, Editor(s)

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