Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Imaging
Comparison of Contrast Media and Low-Molecular-Weight Dextran for Frequency-Domain Optical Coherence Tomography
Yuichi Ozaki, Hironori Kitabata, Hiroto Tsujioka, Seiki Hosokawa, Manabu Kashiwagi, Kohei Ishibashi, Kenichi Komukai, Takashi Tanimoto, Yasushi Ino, Shigeho Takarada, Takashi Kubo, Keizo Kimura, Atsushi Tanaka, Kumiko Hirata, Masato Mizukoshi, Toshio Imanishi, Takashi Akasaka
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Keywords: Contrast media, Intracoronary imaging, Low-molecular-weight dextran L, Optical coherence tomography
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2012 Volume 76 Issue 4 Pages 922-927

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Abstract

Background: Although an intracoronary frequency-domain optical coherence tomography (FD-OCT) system overcomes several limitations of the time-domain OCT (TD-OCT) system, the former requires injection of contrast media for image acquisition. The increased total amount of contrast media for FD-OCT image acquisition may lead to the impairment of renal function. The safety and usefulness of the non-occlusion method with low-molecular-weight dextran L (LMD-L) via a guiding catheter for TD-OCT image acquisition have been reported previously. The aim of the present study was to compare the image quality and quantitative measurements between contrast media and LMD-L for FD-OCT image acquisition in coronary stented lesions. Methods and Results: Twenty-two patients with 25 coronary stented lesions were enrolled in this study. FD-OCT was performed with the continuous-flushing method via a guiding catheter. Both contrast media and LMD-L were infused at a rate of 4ml/s by an autoinjector. With regard to image quality, the prevalence of clear image segments was comparable between contrast media and LMD-L (97.9% vs. 96.5%, P=0.90). Furthermore, excellent correlations were observed between both flushing solutions in terms of minimum lumen area, mean lumen area, and mean stent area. The total volumes of contrast media and of LMD-L needed for OCT image acquisition were similar. Conclusions: FD-OCT image acquisition with LMD-L has the potential to reduce the total amount of contrast media without loss of image quality. (Circ J 2012; 76: 922-927)

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© 2012 THE JAPANESE CIRCULATION SOCIETY
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