Details

Autor(en) / Beteiligte

• Harput, Sevan
• Christensen-Jeffries, Kirsten
• Ramalli, Alessandro
• Brown, Jemma
• Zhu, Jiaqi
• Zhang, Ge
• Leow, Chee Hau
• Toulemonde, Matthieu
• Boni, Enrico
• Tortoli, Piero
• Eckersley, Robert J.
• Dunsby, Chris
• Tang, Meng-Xing

Titel

3-D Super-Resolution Ultrasound Imaging With a 2-D Sparse Array

Ist Teil von

• IEEE transactions on ultrasonics, ferroelectrics, and frequency control, 2020-02, Vol.67 (2), p.269-277

Ort / Verlag

United States: IEEE

Erscheinungsjahr

2020

Quelle

IEEE/IET Electronic Library

Beschreibungen/Notizen

• High-frame-rate 3-D ultrasound imaging technology combined with super-resolution processing method can visualize 3-D microvascular structures by overcoming the diffraction-limited resolution in every spatial direction. However, 3-D super-resolution ultrasound imaging using a full 2-D array requires a system with a large number of independent channels, the design of which might be impractical due to the high cost, complexity, and volume of data produced. In this study, a 2-D sparse array was designed and fabricated with 512 elements chosen from a density-tapered 2-D spiral layout. High-frame-rate volumetric imaging was performed using two synchronized ULA-OP 256 research scanners. Volumetric images were constructed by coherently compounding nine-angle plane waves acquired at a pulse repetition frequency of 4500 Hz. Localization-based 3-D super-resolution images of two touching subwavelength tubes were generated from 6000 volumes acquired in 12 s. Finally, this work demonstrates the feasibility of 3-D super-resolution imaging and super-resolved velocity mapping using a customized 2-D sparse array transducer.