Ultrasound Sensor
Ultrasound Sensor - Related Videos
09:14
Glovebox and Impurity Sensors
0 Views •
2023
Source: Tamara M. Powers, Department of Chemistry, Texas A&M University The glovebox provides a straightforward means to handle air- and moisture-sensitive solids and liquids. The glovebox is what it sounds like: a box with gloves attached to one or more sides, which allows the user to perform manipulations within the glovebox under an inert atmosphere. For manipulations under inert atmospheres, chemists can choose between Schlenk or high-vacuum techniques and a glovebox. Schlenk and...
04:57
Non-Invasive High-Frequency Ultrasound and Doppler Imaging of Rat Brain Hemodynamics
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2025
Source: Giustetto, P., et. al., Non-invasive Parenchymal, Vascular and Metabolic High-frequency Ultrasound and Photoacoustic Rat Deep Brain Imaging. J. Vis. Exp. (2015)In this video, we demonstrate the use of high-frequency ultrasound and photoacoustic imaging to study the vasculature and hemoglobin content in the rat brain. This method provides detailed insights into cerebral perfusion and blood oxygenation, enabling non-invasive analysis of brain vascular structures and oxygen distribution.
09:30
Bacterial Detection & Identification Using Electrochemical Sensors
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Cited by 6 •
2013
We describe an electrochemical sensor assay method for rapid bacterial detection and identification. The assay involves a sensor array functionalized with DNA oligonucleotide capture probes for ribosomal RNA (rRNA) species-specific sequences. Sandwich hybridization of target rRNA with the capture probe and a horseradish peroxidase-linked DNA oligonucleotide detector probe produces a measurable amperometric current.
10:23
Glutamine Flux Imaging Using Genetically Encoded Sensors
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Cited by 7 •
2014
This article will demonstrate how to monitor glutamine dynamics in live cells using FRET. Genetically encoded sensors allow real-time monitoring of biological molecules at a subcellular resolution. Experimental design, technical details of the experimental settings, and considerations for post-experimental analyses will be discussed for genetically encoded glutamine sensors.
10:53
A Novel Application of Musculoskeletal Ultrasound Imaging
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Cited by 14 •
2013
We describe a new ultrasound-based vector tissue Doppler imaging technique to measure muscle contraction velocity, strain and strain rate with sub-millisecond temporal resolution during dynamic activities. This approach provides complementary measurements of dynamic muscle function and could lead to a better understanding of mechanisms underlying musculoskeletal disorders.
FAQs
The piezoelectric transducer performs two linked energy conversions. It first changes an electrical input into an acoustic pulse, then responds to returning echoes by converting acoustic energy back into an electrical signal. Using one transducing element for both directions supports compact sensing and allows the system to compare transmitted pulses with received responses during measurement.
Echo timing indicates how long an acoustic pulse takes to return from a reflecting interface, providing information about the interface’s location. Echo amplitude describes the strength of that returning signal and therefore contributes information about the characteristics of the reflector. Together, these measurements help distinguish structural features and support tissue characterization.
Noncontact operation allows measurements without direct physical access to the structure being examined. This is particularly relevant for soft tissue, where invasive access could disturb the measurement or the subject. The same property supports diagnostic systems, physiological monitoring, and guided procedures in which preserving tissue condition and observing changes over time are important.
Real-time operation allows measurements to be observed while structures, motion, or physiological conditions are changing. Instead of limiting analysis to a later, static result, the sensor can provide ongoing information for monitoring and decision-making. This capability is valuable in diagnostic systems, guided procedures, and other bioengineering applications that depend on current anatomical or physiological information.
A typical measurement begins with an electrical signal driving the piezoelectric transducer to produce an acoustic pulse. The system then detects echoes returning from interfaces and converts them into electrical signals. Analysis of echo timing and amplitude provides information about location and reflecting characteristics, enabling measurements without direct contact with the target.
In bioengineering, ultrasound sensors support noninvasive imaging, tissue characterization, blood-flow assessment, and physiological monitoring. They can also be incorporated into wearable devices and guided procedures, where measurements must be obtained from soft tissue or changing biological conditions. Emerging therapeutic technologies represent another application area identified for these sensors.
Their ability to interact safely with soft tissue, operate in real time, and measure without direct contact makes ultrasound sensors suitable for expanding bioengineering platforms. Wearable devices can use them for physiological monitoring, while guided procedures can use their measurements to support intervention. The same capabilities also provide a foundation for emerging therapeutic technologies.