TY - GEN

T1 - Plane wave fast color flow mode imaging

T2 - SPIE Medical Imaging 2006

AU - Bolic, Ibrahim

AU - Udesen, Jesper

AU - Gran, Fredrik

AU - Jensen, Jørgen Arendt

PY - 2006

Y1 - 2006

N2 - 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 degrees and 75 degrees. Compared to the conventional ultrasound imaging the frame rate is similar to 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 degrees and 75 degrees, and the standard deviation, sigma(est) of the velocity profile estimate is around 2% for beam to flow angles between 45 degrees and 75 degrees 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 degrees and 75 degrees. The parameter study shows that the PWM using Directional velocity estimation gives the best results using spatial sampling interval <= lambda/10, correlation range >= 10A, 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.

AB - 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 degrees and 75 degrees. Compared to the conventional ultrasound imaging the frame rate is similar to 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 degrees and 75 degrees, and the standard deviation, sigma(est) of the velocity profile estimate is around 2% for beam to flow angles between 45 degrees and 75 degrees 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 degrees and 75 degrees. The parameter study shows that the PWM using Directional velocity estimation gives the best results using spatial sampling interval <= lambda/10, correlation range >= 10A, 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.

U2 - 10.1117/12.653461

DO - 10.1117/12.653461

M3 - Article in proceedings

SN - 0-8194-6190-3

T3 - Proceedings of S P I E - International Society for Optical Engineering

SP - Article Number: 61470U

BT - Proceedings of SPIE Medical Imaging meeting, Ultrasonic Imaging and Signal Processing

PB - SPIE

Y2 - 12 February 2006 through 14 February 2006

ER -