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Related Concept Videos

Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

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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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.
During an ultrasonography procedure, a handheld device called a...

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Related Experiment Video

Updated: May 13, 2026

An Experimental Protocol for Assessing the Performance of New Ultrasound Probes Based on CMUT Technology in Application to Brain Imaging
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Multidirectional scattering models for 3-dimensional ultrasound imaging.

Umer Zeeshan Ijaz1, R James Housden, Graham M Treece

  • 1Department of Engineering, University of Cambridge, Cambridge, England. Umer.Ijaz@glasgow.ac.uk

Journal of Ultrasound in Medicine : Official Journal of the American Institute of Ultrasound in Medicine
|March 26, 2013
PubMed
Summary
This summary is machine-generated.

This study introduces new 3D ultrasound models to separate diffuse and directional scattering for better tissue characterization. Enhanced 3D imaging provides improved performance over 2D methods for analyzing ultrasound scattering fields.

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Area of Science:

  • Medical Imaging
  • Biomedical Engineering
  • Acoustics

Background:

  • Ultrasound images rely on backscattered echoes from diffuse and directional scattering.
  • Distinguishing these scattering components is crucial for accurate tissue characterization.
  • Current methods may not fully exploit multi-directional scanning for detailed analysis.

Purpose of the Study:

  • To present models for visualizing scattering fields in 3D ultrasound imaging.
  • To estimate diffuse and specular components of backscattered intensity.
  • To explore the benefits of 3D extensions for ultrasound tissue characterization.

Main Methods:

  • Developed and examined two models: a modified Phong reflection model and an exponential model.
  • Investigated 2D implementations of these models.
  • Proposed and evaluated novel 3D extensions allowing probe movement beyond planar rotation.

Main Results:

  • Observed variations in specular intensity with viewing angle by scanning anatomy from multiple directions.
  • 3D extensions demonstrated improved performance in simulations and experiments.
  • The proposed 3D models effectively visualize and differentiate scattering components.

Conclusions:

  • Separating diffuse and specular scattering components enhances ultrasound tissue characterization.
  • 3D ultrasound imaging models offer superior performance compared to 2D approaches.
  • The developed models provide a valuable tool for advanced analysis of ultrasound scattering fields.