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. 2015 Dec 18;5:18406. doi: 10.1038/srep18406

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(a) Schematic of IVUS-OCT imaging system. Gray, blue, and red lines denote the transmissions of the OCT signal through the optical fiber, the electrical signals, and the trigger signals through electrical wires, respectively. The obtained OCT (b) IVUS (c) images of the same region of interest. (d) A zoom-in image of the distal end of the imaging catheter.