Optical coherence tomography monitoring of angioplasty balloon inflation in a deployment tester.
We present an innovative integration of an intravascular optical coherence tomography probe into a computerized balloon deployment system to monitor the balloon inflation process. The high-resolution intraluminal imaging of the balloon provides a detailed assessment of the balloon quality and, consequently, a technique to improve the balloon manufacturing process. A custom-built swept-source optical coherence tomography system is used for real-time imaging. A semicompliant balloon with a nominal diameter of 4 mm is fabricated for the experiments. Imaging results correspond to balloon deployment in air and inside an artery phantom. A characterization of the balloon diameter, wall thickness, compliance, and elastic modulus is provided, based on image segmentation. Using the images obtained from the probe pullback, a three-dimensional visualization of the inflated balloon is presented.
Azarnoush
Hamed
H
Industrial Materials Institute, National Research Council of Canada, Boucherville, Quebec J4B 6Y4, Canada.
Vergnole
Sébastien
S
Bourezak
Rafik
R
Boulet
Benoit
B
Lamouche
Guy
G
D000388:Air; D000800:Angioplasty, Balloon / Q000295:instrumentation*; D021621:Imaging, Three-Dimensional; D019047:Phantoms, Imaging; D011312:Pressure; D013997:Time Factors; D041623:Tomography, Optical Coherence