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Related Concept Videos

Ultrasonography01:17

Ultrasonography

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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Development of a 64 channel ultrasonic high frequency linear array imaging system.

ChangHong Hu1, Lequan Zhang, Jonathan M Cannata

  • 1Department of Biomedical Engineering and NIH Transducer Resource Center, University of Southern California, Los Angeles, CA 90089, United States. changhoh@usc.edu

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This study developed a 64-channel digital ultrasound imaging system for testing high-frequency linear arrays, achieving 146 µm lateral and 54 µm axial resolution for advanced medical imaging.

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Area of Science:

  • Medical Imaging
  • Ultrasound Technology
  • High-Frequency Arrays

Background:

  • Previous ultrasound systems had limitations in lateral resolution and field of view.
  • Development of high-frequency ultrasound arrays necessitates advanced digital imaging systems.

Purpose of the Study:

  • To design and test a 64-channel digital ultrasound imaging system.
  • To serve as a platform for evaluating novel high-frequency linear arrays.
  • To improve lateral resolution and extend the field of view in ultrasound imaging.

Main Methods:

  • A 64-channel digital imaging system with analog front-end, Time-Gain Compensation (TGC), high-speed digitizers, and a beamformer was implemented.
  • A Personal Computer (PC) served as the user interface for real-time image display.
  • The system utilized Field Programmable Gate Arrays (FPGAs) for data processing and a beamformer with combined coarse and fine delays.

Main Results:

  • The system achieved a maximum frame rate of 50 frames per second.
  • Wire phantom images demonstrated a lateral resolution of 146 micrometers and an axial resolution of 54 micrometers.
  • The system successfully acquired images of biological samples, including eyeballs and mouse embryos.

Conclusions:

  • The developed 64-channel system effectively supports the testing of high-frequency ultrasound arrays.
  • The system demonstrates significant improvements in spatial resolution for high-frequency ultrasound imaging.
  • This platform facilitates advancements in high-frequency ultrasound array development and application.