Intraventricular blood flow vector and streamline imaging using high frame rate cardiac ultrasound

2014 ◽  
Author(s):  
Hiroki Takahashi ◽  
Hideyuki Hasegawa ◽  
Hiroshi Kanai
Keyword(s):  
Blood Flow ◽  
Frame Rate ◽  
Cardiac Ultrasound ◽  
High Frame Rate ◽  
Flow Vector

Two-dimensional blood flow vector obtained with high frame rate acquisition of dual-angle Doppler signal

2016 ◽  
Vol 140 (4) ◽  
pp. 3027-3028
Author(s):  
Yoshifumi Saijo ◽  
Osamu Akagawa ◽  
Kosuke Fukazu ◽  
Naoya Tsugita ◽  
Sou Yaegashi ◽  
...  
Keyword(s):  
Blood Flow ◽  
Frame Rate ◽  
Doppler Signal ◽  
Two Dimensional ◽  
High Frame Rate ◽  
Flow Vector ◽  
Dual Angle

Preliminary study on estimation of flow velocity vectors using focused transmit beams

2021 ◽  
Author(s):  
Hideyuki Hasegawa ◽  
Michiya Mozumi ◽  
Masaaki Omura ◽  
Ryo Nagaoka ◽  
Kozue Saito
Keyword(s):  
Blood Flow ◽  
Flow Velocity ◽  
Blood Flow Velocity ◽  
Soft Tissues ◽  
Estimation Error ◽  
Frame Rate ◽  
High Frame Rate ◽  
In Vivo Measurement ◽  
Preliminary Study

Abstract High-frame-rate ultrasound imaging with plane wave transmissions is a predominant method for blood flow imaging, and methods for estimation of blood flow velocity vectors have been developed based on high-frame-rate imaging. On the other hand, in imaging of soft tissues, such as arterial walls and atherosclerotic plaques, high-frame-rate imaging sometimes suffers from high-level clutters. Even in observation of the arterial wall with a focused transmit beam, it would be highly beneficial if blood flow velocity vectors could be estimated simultaneously. We conducted a preliminary study on estimation of blood flow velocity vectors based on a multi-angle Doppler method with focused transmit beam and parallel receive beamforming. It was shown that the lowest estimation error was achieved at a steering angle of 25 degrees by simulation. Also, velocity vectors with typical velocity magnitudes and directions could be obtained by the proposed method in in vivo measurement of a carotid artery.

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