The Characteristics of the Blood Flow Distribution near the Vessel Wall in Mildly-Stenosed Vessels
This paper presents a study on the velocity distribution of the blood flow near the vessel wall in the mildly-stenosed vessels to determine the characteristics being sensitive to the arterial stenosis at an early stage. By solving the NavierStokes equations, the velocity distributions of blood flow near the vessel wall in the mildly stenosed vessels are calculated according to the velocity at the axis of the circular tube, and then the power spectrum density (PSD) of the blood flow velocity distribution is estimated by summing the contribution of all scatterers passing through the sample volume grouped into elemental volumes to determine the characteristics being sensitive to the mild stenosis. The results show that Doppler ultrasound spectrogram characteristics, such as: increased spectral broadening index and obvious reserved blood flow (components with negative frequencies), are observed in the blood flow close to the vessel wall, and could be used as the indications that identify the mild narrowing of arteries.
Doppler ultrasound blood flow distribution close to the vessel wall mild stenosis
Lian Gao Yufeng Zhang Hong Su Bin Liu Xinling Shi
Department of Electronic Engineering, Information School, Yunnan University, Kunming, Yunnan, 650091 P.R. China
国际会议
2011 4th International Congress on Image and Signal Processing(第四届图像与信号处理国际学术会议 CISP 2011)
上海
英文
2366-2370
2011-10-15（万方平台首次上网日期，不代表论文的发表时间）