TY  - BOOK
AU  - Harput,Sevan
AU  - Christensen-Jeffries,Kirsten
AU  - Ramalli,Alessandro
AU  - Brown,Jemma
AU  - Zhu,Jiaqi
AU  - Zhang,Ge
AU  - Leow,Chee Hau
AU  - Toulemonde,Matthieu
AU  - Boni,Enrico
AU  - Tortoli,Piero
AU  - Eckersley,Robert J.
AU  - Dunsby,Chris
AU  - Tang,Meng-Xing
TI  - 3-D Super-Resolution Ultrasound Imaging With a 2-D Sparse Array
PY  - 2020///-02-01
KW  - Text
KW  - local
N1  - /pmc/articles/PMC7614008; /pubmed/31562080
N2  - 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 3D 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
UR  - http://dx.doi.org/10.1109/TUFFC.2019.2943646
ER  -