Mr. Ibrahim Bolic Profile

Ibrahim Bolic

at Danmarks Tekniske Univ

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Proceedings Article | 16 March 2006 Paper

Plane wave fast color flow mode imaging: a parameter study

Ibrahim Bolic, Jesper Udesen, Fredrik Gran, Jørgen Jensen

Proceedings Volume 6147, 61470U (2006) https://doi.org/10.1117/12.653461

KEYWORDS: Ultrasonography, Transducers, Blood, Color imaging, Tissues, Blood circulation, Signal to noise ratio, Blood vessels, Image acquisition, Filtering (signal processing)

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A new Plane wave fast color flow imaging method (PWM) has been investigated, and performance evaluation of the PWM based on experimental measurements has been made. The results show that it is possible to obtain a CFM image using only 8 echo-pulse emissions for beam to flow angles between 45^o. and 75^o. Compared to the conventional ultrasound imaging the frame rate is ~ 30-60 times higher. The bias, B_est of the velocity profile estimate, based on 8 pulse-echo emissions, is between 3.3 % and 6.1 % for beam to flow angles between 45^o. and 75^o, and the standard deviation, σ_est of the velocity profile estimate is around 2 % for beam to flow angles between 45^o. and 75^o. relative to the peak velocity, when the flow angle is known in advance. A study is performed to investigate how different parameters influence the blood velocity estimation. The results confirmed expectations for beam to flow angles between 45^o. and 75^o. The parameter study shows that the PWM using Directional velocity estimation gives the best results using spatial sampling interval ≤λ/10, correlation range ≥10λ, and number of directional signals ≥6. It is hereby shown that, by carefully choosing the set of parameters, PWM is feasible for fast CFM imaging with an acceptable bias and standard deviation.

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