B-mode Ultrasound
B-mode Ultrasound - Related Videos
06:42
Providing Visual Biofeedback Using Brightness Mode Ultrasound During a Golf Swing
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Cited by 5 •
2022
Brightness mode ultrasound can be used to provide visual biofeedback of the muscles of the lateral abdominal wall during a golf swing. Post-swing visual and verbal instruction can increase the muscle activation and timing of the external and internal obliques.
09:00
Murine Echocardiography and Ultrasound Imaging
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Cited by 61 •
2010
This video demonstrates use of a rail-mounted high-frequency ultrasound probe to perform echocardiography on an anesthetized mouse. The methods describe both conventional two-dimensional and M-mode measurements of cardiac function in addition to newer, more powerful tools such as color Doppler, strain analysis, as well as general and targeted contrast imaging.
14:20
High-frequency Ultrasound Imaging of the Abdominal Aorta
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2023
Source: Amelia R. Adelsperger, Evan H. Phillips, and Craig J. Goergen, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana High-frequency ultrasound systems are used to acquire high resolution images. Here, the use of a state-of-the-art system will be demonstrated to image the morphology and hemodynamics of small pulsatile arteries and veins found in mice and rats. Ultrasound is a relatively inexpensive, portable, and versatile method for the noninvasive...
01:07
What is a Mode?
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2023
The mode is one of the commonly used measures of a central tendency. It is defined as the most frequent value in a data set. There can be more than one mode in a data set if multiple values have the same highest frequency. For instance, suppose that the Statistics exam scores of 20 students are: 50; 53; 59; 59; 63; 63; 72; 72; 72; 72; 72; 76; 78; 81; 83; 84; 84; 84; 90; 93. Here, the mode is 72, as it occurs most frequently, five times. A data set with two modes is called bimodal. For example,...
09:21
Muscle Function Obtained with Motion Mode Ultrasound and Surface Electromyography during Core Endurance Exercise
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Cited by 2 •
2022
This protocol uses motion mode ultrasound and surface electromyography simultaneously to measure muscle function of the core. Muscle thickness and activation of the local stabilizers (e.g., transverse abdominis, internal oblique) and global movers (e.g., external oblique) is achievable during specific time points of the side plank and dead bug exercises.
FAQs
Acoustic impedance differences at tissue boundaries determine how much of an incident pulse is reflected. A larger returned echo contributes a brighter pixel because B-mode processing maps echo amplitude to grayscale intensity. Interfaces with weaker reflections appear darker. Thus, image contrast is not simply a direct picture of anatomy; it represents how strongly neighboring tissues return sound.
Echo travel time is used to estimate how deep a reflecting boundary lies. The system measures the interval between pulse transmission and echo return, then places the corresponding signal at a depth in the image. This timing information complements amplitude: travel time determines location, whereas echo strength determines brightness. Together, they create spatially organized grayscale anatomy.
The transducer is the interface that launches short, high-frequency acoustic pulses and receives the echoes returning from internal boundaries. Its performance therefore affects both the acoustic information entering the body and the signals available for image construction. In physics research, this makes transducer design a direct route for improving B-mode imaging capability and measurement quality.
Because B-mode ultrasound uses sound rather than ionizing radiation, it can provide visualization without the radiation exposure associated with ionizing imaging approaches. Its real-time capability also allows internal structures to be observed as imaging occurs. These properties support clinical assessment and biomedical research when immediate visualization of anatomy, fluid-filled regions, or tissue interfaces is relevant.
A typical image-forming sequence begins when the transducer sends a short acoustic pulse. Returning echoes are then associated with tissue boundaries, while their travel times provide depth information and their amplitudes determine grayscale brightness. Repeating this processing across detected echoes produces a two-dimensional display, allowing the system to organize internal interfaces spatially rather than showing isolated signals.
B-mode ultrasound is particularly useful for showing tissue interfaces and fluid-filled regions because both produce boundaries from which echoes return. It also supports visualization of broader internal anatomy for clinical assessment and experimental measurements. The resulting image can therefore serve not only as a visual display, but also as a basis for examining the location and appearance of structures within the scanned region.
In physics and biomedical research, the technique provides a way to study how acoustic pulses interact with tissue boundaries and how returned signals become image information. Research applications include experimental measurements, improved ultrasound transducers, and image-processing methods. These efforts target better acquisition or interpretation of echo data while preserving the method's real-time, nonionizing imaging role.