Figure 3 | Scientific Reports

Figure 3

From: Real-time intravascular photoacoustic-ultrasound imaging of lipid-laden plaque in human coronary artery at 16 frames per second

Figure 3

1-mm high-sensitivity catheter and fiber-optic rotary joint assembly for high-speed IVPA-US imaging. (a) Gross picture of flexible IVPA-US catheter with a 1 cent coin. Proximal end of the catheter was assembled with a FC/PC connector. (b) Schematic of 1-mm collinear IVPA-US catheter design. The red ellipses and black curves highlight the collinear paths of optical pulses and acoustic waves, respectively. Inset shows the actual picture of assembled catheter tip. Ruler scale: 1 mm. (c) Picture of overall fiber-optics rotary joint assembly. (d) Schematic of fiber-optic rotary joint for high-pulse-energy high-repetition-rate laser delivery.

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