1. Variability in quantitative and qualitative analysis of intravascular ultrasound and frequency domain optical coherence tomography

    Variability in quantitative and qualitative analysis of intravascular ultrasound and frequency domain optical coherence tomography

    Background: Frequency-domain optical coherence tomography (FD-OCT) is an intravascular imaging technique now available in the United States. However, the importance of level of training required for analysis using intravascular ultrasound (IVUS) and FD-OCT is unclear. The aim of this study was to evaluate inter- and intra-observer variability between expert and beginner analysts interpreting IVUS and FD-OCT images. Methods and results : Two independent expert analysts and two independent beginner analysts evaluated a total of 226±2 stent cross-sections with IVUS and 232±2 stent cross-sections with FD-OCT in 14 patients after stenting. Inter- and intra-observer variability for determining stent volume index ...

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