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Related Concept Videos

Ultrasonography01:17

Ultrasonography

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Ultrasonography is an imaging technique that uses high-frequency sound waves to visualize the body's internal structures. It is a non-invasive and safe procedure that does not involve the use of ionizing radiation, making it widely used in various medical fields. Ultrasonography is used to study heart function, blood flow in the neck or extremities, certain conditions such as gallbladder disease, and fetal growth and development.
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Ultrasound I: Abdominal Ultrasonography01:20

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Introduction:
Abdominal ultrasonography, commonly known as abdominal ultrasound, is a vital, non-invasive medical imaging technique widely used in healthcare.
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Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
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Imaging Studies II: Ultrasonography01:24

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IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
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Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System
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Local scattering ultrasound imaging.

Alexander Velichko1, Eduardo Lopez Villaverde2, Anthony J Croxford2

  • 1Department of Mechanical Engineering, University of Bristol, Bristol, BS8 1TR, UK. a.velichko@bristol.ac.uk.

Scientific Reports
|January 14, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed a new ultrasonic imaging technique to separate signals from different scattering areas in complex materials. This method improves the detection and characterization of weak targets, enhancing imaging capabilities.

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Area of Science:

  • Materials Science
  • Acoustics
  • Imaging Technology

Background:

  • Ultrasonic imaging is crucial for detecting material inhomogeneities but struggles in complex, scattering media.
  • Scattered ultrasonic waves obscure weak targets, limiting current imaging resolution and characterization.
  • Raw ultrasonic data is a superposition of reflections, hiding local scattering information.

Purpose of the Study:

  • To develop a method for separating local scattering data from complex ultrasonic measurements.
  • To enable full spatio-temporal separation of transmitter-receiver data corresponding to distinct scattering areas.
  • To exploit local scattering directivity for enhanced imaging and target characterization.

Main Methods:

  • Utilized a complete set of transmitter-receiver data.
  • Developed algorithms for spatio-temporal separation of ultrasonic signals.
  • Applied principles of scattering amplitude and phase analysis.
  • Demonstrated proof-of-concept using numerical and experimental examples.

Main Results:

  • Achieved full spatio-temporal separation of local scattering data.
  • Enabled access to previously inaccessible local scattering information.
  • Successfully detected small inclusions in highly scattering materials.
  • Demonstrated the utility of local scattering directivity for image reconstruction.

Conclusions:

  • The developed technique significantly enhances ultrasonic imaging in complex media.
  • Access to local scattering data unlocks new analytical approaches and imaging capabilities.
  • This method offers broad applicability in fields utilizing phased array technology.