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Enhanced ultrasonic imaging property of polyurethane filled with hollow glass beads
Author(s) -
Gao Weining,
Lian Rui,
Chen Xiaog,
Yan Shentao,
Zhang Suqiao,
Zhang Guoqiang
Publication year - 2020
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25557
Subject(s) - materials science , ultrasonic sensor , composite number , composite material , glass microsphere , polyurethane , ultrasound , biomedical engineering , volume (thermodynamics) , microsphere , radiology , medicine , physics , quantum mechanics , chemical engineering , engineering
Materials capable of ultrasonic imaging in vivo are essential for the development of ultrasound visualized interventional catheters. In the present research, hollow glass beads (HGB) were added to polyurethane as ultrasonic image‐enhancing agent to obtain composite with improved ultrasonic visibility within body tissues. The experimental results show that with the increase of the volume percentage of HGB ( V HGB ) in the composites, the clarity of the ultrasonic images of the composite samples gradually improves. For ultrasonic imaging, a proper V HGB would be 6% to 10%. The particle size (25‐65 μm) of the HGB has almost no effect on the imaging of the composites at the same loading level of the glass beads. The result obtained in the experiments conducted in pig body confirmed that TPU/HGB composite sample could provide significant enhanced ultrasonic imaging compared with pure polyurethane sample and the commercial interventional catheter sample used. Medical safety of the composite was briefly investigated as well by testing the extraction solution of the composite sample.