High velocity investigation with Multi Line Vector Doppler

被引:0
|
作者
Meacci, Valentino [1 ]
Ricci, Stefano [1 ]
Giangrossi, Claudio [1 ]
Matera, Riccardo [1 ]
Dallai, Alessandro [1 ]
Boni, Enrico [1 ]
Tortoli, Piero [1 ]
机构
[1] Univ Florence, Dept Informat Engn, I-50139 Florence, Italy
来源
2019 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS) | 2019年
关键词
Blood velocity measurement; High PRF; Vector Doppler; Real-time; ULA-OP; ULTRASOUND; FLOW;
D O I
10.1109/ultsym.2019.8925613
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Vector methods based on the transmission of Plane Waves (PWs) produce impressive 2D maps of blood velocity. They are based on complex algorithms that process intensively huge amount of data. Producing 2D vector maps in real-time stresses the system hardware, limiting the achievable Pulse Repetition Frequency (PRF) which is frequently insufficient to measure, e.g., the blood velocities in stenoses, which may be higher than 2m/s. This work shows how the Multi Line Vector Doppler (MLVD) method, implemented on ULA-OP 256, overcomes part of the difficulties by using the new Virtual Real-Time' (VRT) processing architecture. In real-time, channel data are saved in the system memory, while in VRT data are re-processed from the memory as if they were coming from the probe. The ULA-OP 256 calculation power is used in real-time to achieve maximum PRF at the expenses of image quality, while in VRT the maximum image quality is restored as well. Experiments are reported where MLVD is shown capable of investigating flow jets up to 3 m/s with PRF of 16 kHz.
引用
收藏
页码:360 / 363
页数:4
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