High-Frequency 64-Element Ring-Annular Array Transducer: Development and Preclinical Validation for Intravascular Ultrasound Imaging DOI Creative Commons
Xi Liu, Y. Li, Hui Qin

et al.

Biosensors, Journal Year: 2025, Volume and Issue: 15(3), P. 169 - 169

Published: March 5, 2025

Intravascular ultrasound (IVUS) imaging has become an essential method for diagnosing coronary artery disease. However, traditional mechanically rotational IVUS catheters encounter issues such as mechanical wear and distortions in curved vessels. The ring-annular array gained attention because it offers superior performance without the need parts, thereby avoiding distortion. An optimized micromachining process employing precision dicing technology is proposed this study, with objective of achieving higher operating frequencies minimized outer diameters a 64-element array. This broadens range fabrication options improves sensitivity arrays, well eliminating distortion catheters, particularly probe 7.5 Fr (2.5 mm) diameter, key steps including dicing, flexible circuit integration, Parylene C encapsulation. center frequency 21.51 MHz 67.87% bandwidth, 56 µm axial resolution 276 lateral resolution. further validated by vitro phantom ex vivo imaging.

Language: Английский

High-Frequency 64-Element Ring-Annular Array Transducer: Development and Preclinical Validation for Intravascular Ultrasound Imaging DOI Creative Commons
Xi Liu, Y. Li, Hui Qin

et al.

Biosensors, Journal Year: 2025, Volume and Issue: 15(3), P. 169 - 169

Published: March 5, 2025

Intravascular ultrasound (IVUS) imaging has become an essential method for diagnosing coronary artery disease. However, traditional mechanically rotational IVUS catheters encounter issues such as mechanical wear and distortions in curved vessels. The ring-annular array gained attention because it offers superior performance without the need parts, thereby avoiding distortion. An optimized micromachining process employing precision dicing technology is proposed this study, with objective of achieving higher operating frequencies minimized outer diameters a 64-element array. This broadens range fabrication options improves sensitivity arrays, well eliminating distortion catheters, particularly probe 7.5 Fr (2.5 mm) diameter, key steps including dicing, flexible circuit integration, Parylene C encapsulation. center frequency 21.51 MHz 67.87% bandwidth, 56 µm axial resolution 276 lateral resolution. further validated by vitro phantom ex vivo imaging.

Language: Английский

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