title: Comparison of longitudinal geometric measurement in human coronary arteries between frequency-domain optical coherence tomography and intravascular ultrasound.
abstract: Previous studies have demonstrated the higher accuracy of frequency-domain optical coherence tomography (FD-OCT) for quantitative measurements in comparison with intravascular ultrasound (IVUS). However, those analyses were based on the cross-sectional images. The aim of this study was to assess the accuracy of FD-OCT for longitudinal geometric measurements of coronary arteries in comparison with IVUS. Between October 2011 and March 2012, we performed prospective FD-OCT and IVUS examinations in consecutive 77 patients who underwent percutaneous coronary intervention with single stent. Regression analysis and Bland-Altman analysis revealed an excellent correlation between the FD-OCT-measured stent lengths and IVUS-measured stent lengths (r = 0.986, p < 0.001; mean difference = -0.51 mm). There was an excellent agreement between the actual stent lengths and the FD-OCT-measured stent lengths (r = 0.993, p < 0.001) as well as between the actual stent lengths and the IVUS-measured stent lengths (r = 0.981, p < 0.001). The difference between the actual stent lengths and the FD-OCT-measured stent lengths was significantly smaller than that between the actual stent lengths and the IVUS-measured stent lengths (0.15 ± 0.68 vs. 0.70 ± 1.15 mm, p < 0.001). Both FD-OCT (mean difference = -0.04 and -0.04 mm, respectively) and IVUS (mean difference = -0.06 and -0.06 mm, respectively) showed an excellent intra-observer and inter-observer reproducibility for the stent length measurements. In conclusion, FD-OCT provides accurate longitudinal measurement with excellent intra-observer and inter-observer reproducibility. FD-OCT might be a reliable technique for longitudinal geometric measurement in human coronary arteries.
authors.affiliation: Department of Cardiovascular Medicine, Wakayama Medical University, 811-1, Kimiidera, Wakayama, 641-8510, Japan.
authors.forename: Yong
authors.initials: Y
authors.lastname: Liu
authors.forename: Kunihiro
authors.initials: K
authors.lastname: Shimamura
authors.forename: Takashi
authors.initials: T
authors.lastname: Kubo
authors.forename: Atsuhi
authors.initials: A
authors.lastname: Tanaka
authors.forename: Hironori
authors.initials: H
authors.lastname: Kitabata
authors.forename: Yasushi
authors.initials: Y
authors.lastname: Ino
authors.forename: Takashi
authors.initials: T
authors.lastname: Tanimoto
authors.forename: Yasutsugu
authors.initials: Y
authors.lastname: Shiono
authors.forename: Makoto
authors.initials: M
authors.lastname: Orii
authors.forename: Takashi
authors.initials: T
authors.lastname: Yamano
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Kumiko
authors.initials: K
authors.lastname: Hirata
authors.forename: Toshio
authors.initials: T
authors.lastname: Imanishi
authors.forename: Takashi
authors.initials: T
authors.lastname: Akasaka
mesh_terms: D000368:Aged; D003324:Coronary Artery Disease / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000628:therapy; D003331:Coronary Vessels / Q000000981:diagnostic imaging* / Q000473:pathology*; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D015588:Observer Variation; D062645:Percutaneous Coronary Intervention / Q000295:instrumentation; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011474:Prosthesis Design; D015203:Reproducibility of Results; D015607:Stents; D013997:Time Factors; D041623:Tomography, Optical Coherence; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional