Cardiac motion artifacts, non-uniform rotational distortion and undersampling affect the image quality and the diagnostic impact of intravascular optical coherence tomography (IV-OCT). In this study we demonstrate how these limitations of IV-OCT can be addressed by using an imaging system that we called “Heartbeat OCT”, combining a fast Fourier Domain Mode Locked laser, fast pullback, and a micromotor actuated catheter, designed to examine a coronary vessel in less than one cardiac cycle. We acquired in vivo data sets of two coronary arteries in a porcine heart with both Heartbeat OCT, working at 2.88 MHz A-line rate, 4000 frames/s and 100 mm/s pullback speed, and with a commercial system. The in vivo results show that Heartbeat OCT provides faithfully rendered, motion-artifact free, fully sampled vessel wall architecture, unlike the conventional IV-OCT data. We present the Heartbeat OCT system in full technical detail and discuss the steps needed for clinical translation of the technology.

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Biomedical Optics Express
Erasmus MC: University Medical Center Rotterdam

Wang, T, Pfeiffer, A.F.H, Regar, E.S, Wieser, W, van Beusekom, H.M.M, Lancée, C.T, … van Soest, G. (2015). Heartbeat OCT: In vivo intravascular megahertz-optical coherence tomography. Biomedical Optics Express, 6(12), 5021–5032. doi:10.1364/BOE.6.005021