Vascular Ultrasound
Vascular Ultrasound - Related Videos
05:16
An Ultrasound-Guided Vascular Access Procedure in an Anesthetized Pig
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2026
Source:Rui Cerqueira1,2, Liliana Costa1, André Leite-Moreira1, Adelino Leite-Moreira1,2, André Lourenço1, Pedro Mendes-Ferreira11Department of Surgery and Physiology, Faculty of Medicine of the University of Porto.2Department of Cardiothoracic Surgery, Hospital Universitário de São João.The video demonstrates a procedure for obtaining vascular access in an anesthetized pig using ultrasound guidance. After disinfecting the site and administering local anesthesia, an ultrasound probe is used to...
08:18
Engineered Vascularized Muscle Flap
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Cited by 6 •
2016
To date, thick tissue defects are typically reconstructed by applying autologous tissue flaps or engineered tissues. In this protocol, we present a new method for engineering vascularized tissue flap bearing an autologous pedicle, to serve as a substitute to autologous flaps.
07:29
Deep Vascular Imaging in the Eye with Flow-Enhanced Ultrasound
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Cited by 2 •
2021
We present a non-invasive ultrasound technique for generating three-dimensional angiographies in the eye without the use of contrast agents.
08:50
Assessment of Vascular Function in Patients With Chronic Kidney Disease
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Cited by 25 •
2014
The degree of vascular dysfunction and contributing physiological mechanisms can be assessed in patients with chronic kidney disease by measuring brachial artery flow-mediated dilation, aortic pulse-wave velocity, and vascular endothelial cell protein expression.
10:39
Contrast Imaging in Mouse Embryos Using High-frequency Ultrasound
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Cited by 4 •
2015
Here, we present a protocol to inject ultrasound microbubble contrast agents into living, isolated late-gestation stage murine embryos. This method enables the study of perfusion parameters and of vascular molecular markers within the embryo using contrast-enhanced high-frequency ultrasound imaging.
FAQs
The Doppler component detects frequency changes in returning sound caused by moving red blood cells. These changes provide information about the direction of blood movement and allow flow velocity to be estimated. In bioengineering studies, those measurements help connect vessel design or structural changes with their effects on circulation and hemodynamics.
The transducer sends sound pulses into tissue and receives echoes returning from internal structures. The echo information is used to form images that show vascular structure, while Doppler analysis of frequency changes supplies flow-related information. Considering both outputs allows investigators to examine vessel form and function within the same imaging approach.
Real-time operation allows vascular structure and circulation to be observed while an assessment is taking place, supporting evaluation of changing conditions and treatment response. Because the technique does not use ionizing radiation, it is also useful for repeated monitoring of engineered vessels and for studying how design changes influence blood circulation.
During scanning, a transducer directs high-frequency sound pulses into tissue and collects the returning echoes. Those echoes generate images of the vessels, while frequency shifts associated with moving red blood cells are analyzed to estimate flow direction and velocity. The combined structural and flow information supports assessment of vascular function.
Bioengineers can apply vascular ultrasound to device development, hemodynamic studies, and tissue-engineering research. It can help evaluate how a device or engineered vessel relates to blood movement and vascular structure. The technique is especially relevant when investigators need functional circulation information alongside imaging during development or testing.
Vascular ultrasound can monitor engineered vessels by providing information about both their vascular structure and blood flow. Researchers can also use it to assess vascular disease and observe treatment response. In bioengineering, comparing these findings over time helps reveal whether an intervention or design change is associated with altered circulation.