Cyclic and radial variation of the echogenicity of blood in human carotid arteries observed by harmonic imaging

Ultrasound in Medicine & Biology
Dong-Guk PaengK K Shung

Abstract

To better understand the characteristics of erythrocyte aggregation in flowing blood, echogenicity variation in blood was observed both in vitro and in vivo. However, few noninvasive observations of blood echogenicity variation during the cardiac cycle in human arteries have been reported. In the present study, to reduce the dynamic range between the blood vessel lumen and the surrounding tissue, coded harmonic images were acquired from human carotid arteries using a GE LOGIQ 700 Expert system (GE, Milwaukee, WI, USA) with an M12L probe, which enabled the noninvasive detection of the cyclic and radial variation of echogenicity in arterial vessels. It was found that blood echogenicity increased during systole, reaching a maximum at peak systole and then decreased to a weak level during diastole. The echogenicity profiles of blood along the vessel diameter were found to be approximately parabolic in the cardiac cycle, except for the hypoechoic zone near the center of the vessel at peak systole. The present results for human carotid arteries corroborate previous in vitro observations that showed a cyclic and radial variation of blood echogenicity, which was thought to be caused by the enhancement of erythrocyte aggregation due to ...Continue Reading

References

May 1, 1992·IEEE Transactions on Bio-medical Engineering·K K ShungC C Lim
Jan 1, 1996·Ultrasound in Medicine & Biology·S J Wu, K K Shung
Oct 13, 2001·Ultrasound in Medicine & Biology·D G PaengK K Shung
Feb 14, 2004·Ultrasound in Medicine & Biology·Dong-Guk PaengK Kirk Shung
Jan 12, 2008·Ultrasound in Medicine & Biology·Linh Chi NguyenGuy Cloutier

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Citations

Dec 29, 2010·The International Journal of Cardiovascular Imaging·Kweon-Ho NamSang-Joon Lee
Feb 7, 2013·Ultrasound in Medicine & Biology·Chih-Chung HuangCho-Chiang Shih
Mar 23, 2011·Ultrasound in Medicine & Biology·Ying LiDong-Guk Paeng
May 3, 2014·Ultrasound in Medicine & Biology·Kweon-Ho Nam, Dong-Guk Paeng
Jan 5, 2011·Journal of Biomedical Optics·Adi SheinfeldAvishay Eyal
Mar 6, 2019·Microcirculation : the Official Journal of the Microcirculatory Society, Inc·Vibujithan VigneshwaranNicolas P Smith

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