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Engineering    2015, Vol. 1 Issue (1) : 15 -17
News & Highlights |
A Micromotor Catheter for Intravascular Optical Coherence Tomography
Tianshi Wang1,Gijs van Soest1,Antonius F. W. van der Steen1,2,3
1. Department of Biomedical Engineering, Thoraxcenter, Erasmus MC, Rotterdam 3000 DR, the Netherlands
2. Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
3. Department of Imaging Physics and Technology, Delft University of Technology, Delft 2600 AA, the Netherlands

We have developed a new form of intravascular optical coherence tomography (IV-OCT) that allows the extremely fast acquisition of high-resolution images of the coronary arteries. This process leads to much better image quality by eliminating cardiac motion artefacts and undersampling. It relies on a catheter that incorporates a synchronous micromotor with a diameter of 1.0 mm and a rotational speed of up to 5600 revolutions per second, enabling an IV-OCT frame rate of 5.6 kHz. This speed is matched by a wavelength-swept laser that generates up to 2.8 million image lines per second. With this setup, our team achieved IV-OCT imaging of up to 5600 frames per second (fps) in vitro and 4000 fps in vivo, deployed at a 100 mm·s−1 pullback velocity. The imaging session is triggered by the electrocardiogram of the subject, and can scan a coronary artery in the phase of the heartbeat where the heart is at rest, providing a name for this new technology: the “Heartbeat OCT.”

Just Accepted Date: 31 March 2015   Issue Date: 02 July 2015
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Tianshi Wang
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Tianshi Wang,Gijs van Soest,Antonius F. W. van der Steen. A Micromotor Catheter for Intravascular Optical Coherence Tomography[J]. Engineering, 2015, 1(1): 15 -17 .
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