Differentiation of mild and severe stenosis with motion estimation in ultrasound images.

摘要: Doppler ultrasound technique is now recognized as the best noninvasive screening test for carotid artery stenosis. Ultrasound does not calculate directly degree of arterial narrowing, but relies on extrapolating changes in blood flow parameters to an anatomical This paper deals with estimation stiffness indices mild and severe stenosis common by motion algorithm, focusing their progression atherosclerosis. 145 men mean age 55 ± 12 y who were healthy or had studied. For each examination, matching longitudinal views located, frames grabbed processed algorithm then diameter, cross-section intima-media thickness right estimated. The pressure was recorded brachial using a semiautomatic device. diameter used together measurements estimate standard indices. Relative arteries decreased 22% 48%, respectively, compared artery. Systolic approximately 4.4% lower 2.0% higher carotid. significantly different group patients (p-value < 0.05) subjects. It concluded that, regarding influence atherosclerosis artery, we can differentiate through processing sequential color images optical tracking algorithm. (E-mail: mokhtarm@modares.ac.ir)