Acoustic reflector-based three-dimensional ultrasound imaging

Yichuan Tang; Aditya Malik; Haichong K. Zhang

doi:10.1117/12.2582027

15 February 2021 Acoustic reflector-based three-dimensional ultrasound imaging

Yichuan Tang, Aditya Malik, Haichong K. Zhang

Proceedings Volume 11602, Medical Imaging 2021: Ultrasonic Imaging and Tomography; 116021D (2021) https://doi.org/10.1117/12.2582027
Event: SPIE Medical Imaging, 2021, Online Only

Conference Poster

Abstract

The needle intervention is required in many clinical procedures such as lumbar puncture and lymph node biopsy. Ultrasound (US) imaging has been applied widely to guide procedures involving needle insertion. However, conventional 2D US image guidance provides a limited field of view (FOV) for the region of interest (ROI), especially toward the outof-plane axis. Also, a high level of hand-eye coordination is required to accurately place the needle to the target in tissue because the needle path and the image plane are not registered to each other. This paper p roposes a needle insertion mechanism that enables 3D US imaging to provide a larger FOV and thus assists clinicians in making better decisions about where to insert the needle. Besides 3D imaging functionality, the image plane and needle path are co-registered in the proposed mechanism to facilitate needle insertion. The proposed mechanism uses actuated acoustic reflectors to redirect acoustic waves to different parts of ROI. 2D image slices are collected along the elevation direction and are then focused on the elevation plane. Elevation focusing is achieved with a synthetic aperture focusing algorithm that considers the acoustic path geometry in the actuated reflector system. Both software simulation and imaging experiments using a prototype are carried out to validate the 3D imaging performance.The simulation and experiment results of point and wire phantoms validate the 3D imaging capa bility and suggest that image quality on the elevation plane after applying elevation focusing improved in terms of both resolution and signal to noise ratio. By providing clinicians with an extended FOV with improved image quality, the proposed mechanism has the potential to enable needle insertion with better efficiency and a higher success rate.

Conference Presentation

Citation Download Citation

Yichuan Tang, Aditya Malik, and Haichong K. Zhang "Acoustic reflector-based three-dimensional ultrasound imaging", Proc. SPIE 11602, Medical Imaging 2021: Ultrasonic Imaging and Tomography, 116021D (15 February 2021); https://doi.org/10.1117/12.2582027

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