Volumetric blood flow estimation using dynamic three-dimensional ultrasound color flow imaging

2002 ◽  
Author(s):  
S. Berg ◽  
H. Torp
Keyword(s):  
Blood Flow ◽  
Three Dimensional ◽  
Flow Imaging ◽  
Color Flow ◽  
Flow Estimation ◽  
Color Flow Imaging

An Advanced Filter Adaptive to Non-Stationary Clutter in Ultrasonic Color Flow Imaging

2011 ◽  
Vol 186 ◽  
pp. 141-145
Author(s):  
Cong Sheng Xie ◽  
Dong C. Liu
Keyword(s):  
Blood Flow ◽  
Adaptive Filter ◽  
Constant Velocity ◽  
Cutoff Frequency ◽  
Flow Imaging ◽  
Color Flow ◽  
Flow Estimation ◽  
Clutter Rejection ◽  
Color Flow Imaging ◽  
Tissue Motion

Traditional clutter rejection methods are based on the hypothesis that the clutter signal originates from stationary or moving tissue with a constant velocity, and they are not valid when there exists considerable acceleration of tissue motion. In this paper, we propose an advanced clutter filter adapted to accelerated tissue motion. It uses the instantaneous frequency to realize the DC remove, and uses the bandwidth of the clutter signal to choose the cutoff frequency of the wall filter, Simulation shows this advanced adaptive filter can efficiently attenuate the non-stationary clutter signals and improves the accuracy and the flexibility of the blood flow estimation.

Efficacy of Transcranial Color Flow Imaging in Patients with Abnormal Blood Flow Velocity of the Middle Cerebral Artery

Neurosonology ◽  
1994 ◽  
Vol 7 (2) ◽  
pp. 71-75
Author(s):  
Kentaro FUJISHIRO ◽  
Kuniyasu KODAIRA ◽  
Takashi WADA ◽  
Ken-ichi MAIE ◽  
Eiji TSUKIYAMA ◽  
...  
Keyword(s):  
Blood Flow ◽  
Middle Cerebral Artery ◽  
Flow Velocity ◽  
Cerebral Artery ◽  
Blood Flow Velocity ◽  
Flow Imaging ◽  
Color Flow ◽  
Color Flow Imaging

scholarly journals 15. Evaluation of Blood Flow of the Central Retinal Artery & Vein by Doppler Color Flow Imaging

1993 ◽  
Vol 49 (8) ◽  
pp. 1040
Author(s):  
Kaoru Matsubara ◽  
Satoru Abe ◽  
Takayuki Itoh ◽  
Katsumi Andoh ◽  
Masanori Yamada ◽  
...  
Keyword(s):  
Blood Flow ◽  
Central Retinal Artery ◽  
Flow Imaging ◽  
Color Flow ◽  
Color Flow Imaging ◽  
Retinal Artery ◽  
Doppler Color ◽  
Doppler Color Flow Imaging

Doppler Color Flow Imaging: A New Technique for Visualization and Characterization of the Blood Flow Jet in Mitral Stenosis

1986 ◽  
Vol 61 (8) ◽  
pp. 623-630 ◽  
Author(s):  
BIJOY K. KHANDHERIA ◽  
A. JAMIL TAJIK ◽  
GUY S. REEDER ◽  
MARK J. CALLAHAN ◽  
RICK A. NISHIMURA ◽  
...  
Keyword(s):  
Blood Flow ◽  
Mitral Stenosis ◽  
New Technique ◽  
Flow Imaging ◽  
Color Flow ◽  
Color Flow Imaging ◽  
A New Technique ◽  
Doppler Color ◽  
Doppler Color Flow Imaging

Numerical Simulation of Ultrasonic Color Blood Flow Imaging in the Carotid Artery: Comparing a 1st Order and Fully Coupled Approach

2009 ◽  
Author(s):  
Abigail Swillens ◽  
Lasse Løvstakken ◽  
Thomas De Schryver ◽  
Hans Torp ◽  
Patrick Segers
Keyword(s):  
Numerical Simulation ◽  
Blood Flow ◽  
Carotid Artery ◽  
Ultrasonic Imaging ◽  
Simulation Software ◽  
Flow Imaging ◽  
Ultrasound Images ◽  
Color Flow ◽  
Color Flow Imaging ◽  
Fully Coupled

Ultrasonic imaging is widely applied for visualization of blood flow using different imaging modalities. However, due to the inherent physical limitations of the ultrasonic imaging process, the actual flow dynamics and the information embedded in the ultrasound image do not necessarily strictly correspond. Computational fluid dynamics (CFD) can play an important role in interpreting and improving ultrasound imaging via numerical simulation of ultrasound images. For this purpose, CFD velocity data can be directly processed to mimic ultrasonic images (1st order approach) or can be further coupled to ultrasound simulation software, providing a fully coupled approach. We compared both methods for the clinically relevant case of color flow imaging of the carotid artery. We conclude that for this application, the 1st order approach leads to results lacking indispensable properties of the imaging process, i.e., (i) the imaging dynamics, and (ii) the statistical properties of the ultrasonic velocity estimator.

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