Compression Ultrasound
Compression Ultrasound - Related Videos
08:08
Compression Tests on Hardened Concrete
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2023
Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA There are two distinct stages in a construction project involving concrete. The first stage involves batching, transporting, and casting fresh concrete. At this stage, the material is viscous, and the workability and finishability are the key performance criteria. The second stage occurs when the hydration process begins shortly after the concrete is placed in the form, and the concrete will...
02:58
Measurement of Compressive Stress-Strain Response at Small-Strains
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2025
This protocol presents the configuration of a compression test device capable of precisely measuring the mechanical properties of microstructures in the small-strain region, along with a systematic method for compression testing using this device. The proposed device can be used to analyze various microstructures and the mechanical behavior of polymer-based materials.
05:20
Assessing Spinal Cord Compression Using Diffusion Tensor Imaging
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2025
Source: Zheng, W. et. al., Diffusion Tensor Magnetic Resonance Imaging in Chronic Spinal Cord Compression. J. Vis. Exp. (2019)This video demonstrates diffusion tensor imaging in assessing chronic spinal cord compression. By analyzing water diffusion patterns, fractional anisotropy, and apparent diffusion coefficient values, the findings reveal axonal damage in compressed regions. The findings provide critical insights into spinal cord pathology and structural integrity.
13:31
A Neonatal Mouse Spinal Cord Compression Injury Model
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Cited by 4 •
2016
This article describes a method for generating a reproducible spinal cord compression injury (SCI) in the neonatal mouse. The model provides an advantageous platform for studying mechanisms of adaptive plasticity that underlie spontaneous functional recovery.
09:41
Calibrated Forceps Model of Spinal Cord Compression Injury
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Cited by 57 •
2015
Spinal cord injury models should be highly reproducible. We demonstrate that the calibrated forceps compression model of spinal cord injury is an easy to use surgical method for generating reproducible injuries to the murine spinal cord.
FAQs
The examination uses gentle transducer pressure as the main functional test. A normal vein collapses fully when compressed, while a segment that remains incompressible may contain a clot. This relationship between pressure response and venous patency allows clinicians to identify suspicious areas rapidly without relying only on the appearance of the vein on imaging.
Venous compressibility provides a direct bedside indicator of whether the vein can close under applied pressure. Full collapse supports a normal finding in the examined segment, whereas persistent openness raises concern for an abnormality such as DVT. This makes the pressure response clinically useful when urgent decisions are needed for a patient with suspected lower-extremity disease.
The transducer performs two linked functions: it emits high-frequency sound waves to image the vessel and applies controlled pressure to assess collapse. These actions let the clinician examine selected venous segments and immediately compare their compressibility. Combining imaging with a physical compression response supports a focused assessment rather than a purely visual interpretation.
The clinician places the ultrasound transducer over selected venous segments and uses it to visualize the vessels. Gentle pressure is then applied while the response of each segment is assessed. Fully compressible areas appear normal by this criterion, whereas an incompressible segment is treated as suspicious for a clot and may influence subsequent urgent management.
Clinicians commonly use the examination when deep vein thrombosis is suspected, particularly in the lower extremities. Its rapid, noninvasive format supports immediate bedside assessment and can help guide urgent treatment decisions. The method is especially useful when clinicians need focused information quickly rather than beginning with more invasive or resource-intensive testing.
Its portability allows focused venous assessment in emergency, inpatient, and outpatient settings. Because the examination can be performed at the bedside, clinicians can evaluate suspected abnormalities without depending exclusively on a centralized imaging location. In medicine, this accessibility supports point-of-care decision-making and can reduce reliance on more resource-intensive testing when the focused assessment is appropriate.