Preparation and imaging of intravascular high-frequency transducer

Xinlun Li, Xiaobing Li, Zheng Wu, Feifei Wang, Lixin Jiang, Junting Tian, Jiewen Zhou, Xiangyong Zhao


Intravascular ultrasound (IVUS) imaging is by far the most favorable imaging modality for coronary artery evaluation. IVUS transducer design and fabrication, a key technology for intravascular ultrasound imaging, has a significant impact on the performance of the imaging results. Herein, a 35-MHz side-looking IVUS transducer probe was developed. With a small aperture of 0.40 mm × 0.40 mm, the transducer exhibited a very wide -6 dB bandwidth of 85% and a very low insertion loss of -12 dB. Further, the in vitro IVUS imaging of a porcine coronary artery was performed to clearly display the vessel wall structure while the corresponding color-coded graph was constructed successfully to distinguish necrotic core and fibrous plaque via image processing. The results demonstrated that the imaging performance of the optimized design transducer performs favorably.


High-Frequency Ultrasound Transducer; Intravascular Ultrasound Imaging

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