Transducers and Beamforming
Overview
This lecture focuses on how ultrasound probes (transducers) generate and receive sound waves to produce B‑mode images. It explains array transducers, beamforming techniques, and common technical challenges that may affect image quality.
Learning outcomes
By the end of this lecture, you should be able to:
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Describe the main components of an ultrasound transducer, including piezoelectric elements, matching layers, backing material, and acoustic lenses.
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Explain the principles underlying formation of an ultrasound image including how beam width, focus, slice thickness, scan depth, sector width, and line density, affect frame rate, spatial and contrast resolution in ultrasound imaging.
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Compare the characteristics and clinical applications of linear, curvilinear, and phased array transducers.
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Explain how tissue-related factors such as variations in speed of sound contribute to beam aberration and image degradation.
Lecture Details
- Duration: 32 minutes
- Series: Ultrasound Physics and Equipment
- Provided by: Dr Colin Deane, King’s College London