Shear Wave Elastography Quantifies Stiffness in Ex Vivo Porcine Artery with Stiffened Arterial Region.
作者： Erik Widman , Elira Maksuti , Carolina Amador , Matthew W. Urban , Kenneth Caidahl
DOI: 10.1016/J.ULTRASMEDBIO.2016.05.021
关键词: Pulse repetition frequency 、 Optics 、 Materials science 、 Acoustic radiation force 、 Biomedical engineering 、 Elasticity Imaging Techniques 、 Ultrasound 、 Shear modulus 、 Stiffness 、 Phase velocity 、 Elastic modulus
摘要: Five small porcine aortas were used as a human carotid artery model, and their stiffness was estimated using shear wave elastography (SWE) in the arterial wall stiffened region mimicking stiff plaque. To optimize SWE settings, bandwidth measured with respect to acoustic radiation force push length number of compounded angles for motion detection plane imaging. The mean simulated plaque moduli varied from 41 ± 5 97 ± 10 kPa 86 ± 13 174 ± 35 kPa, respectively, over pressure range 20-120 mmHg. results revealed that minimum approximately 1500 Hz is necessary consistent modulus estimates, high pulse repetition frequency no image compounding more important than lower better quality when estimating SWE.
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