Laser Generated Leaky Acoustic Waves for Needle Visualization
Journal
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
Date Issued
2018
Author(s)
Abstract
© 1986-2012 IEEE. Ultrasound (US)-guided needle operation is usually used to visualize both tissue and needle position such as tissue biopsy and localized drug delivery. However, the transducer-needle orientation is limited due to reflection of the acoustic waves. We proposed a leaky acoustic wave method to visualize the needle position and orientation. Laser pulses are emitted on top of the needle to generate acoustic waves; then, these acoustic waves propagate along the needle surface. Leaky wave signals are detected by the US array transducer. The needle position can be calculated by phase velocities of two different wave modes and their corresponding emission angles. In our experiments, a series of needles was inserted into a tissue mimicking phantom and porcine tissue to evaluate the accuracy of the proposed method. The results show that the detection depth is up to 51 mm and the insertion angle is up to 40° with needles of different diameters. It is demonstrated that the proposed approach outperforms the conventional B-mode US-guided needle operation in terms of the detection range while achieving similar accuracy. The proposed method reveals the potentials for further clinical applications.
Subjects
Image-guided biopsy; laser-induced guided wave; leaky acoustic wave
SDGs
Publisher
Institute of Electrical and Electronics Engineers ({IEEE})
Type
journal article