B-mode Controls
Overview
This lecture explains the key controls used in B‑mode imaging and how they influence image quality. It covers how adjustments to machine settings can improve clarity, contrast and diagnostic usefulness.
Learning Outcomes
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Describe the function of key ultrasound scanner controls including gain, TGC/DGC, depth, focus, frequency, dynamic range, zoom.
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Explain how manipulation of scanner controls influences image quality, spatial resolution, contrast resolution, penetration, and frame rate.
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Evaluate the role of advanced image acquisition and processing techniques such as spatial compounding, tissue harmonic imaging, and adaptive processing (e.g. persistence and edge enhancement) in ultrasound imaging.
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Apply appropriate scanner control adjustments to optimise ultrasound images for different clinical applications and tissue characteristics.
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Discuss how inappropriate use of scanner controls may affect image interpretation and measurement accuracy in diagnostic ultrasound.
Lecture Details
- Duration:
- Part A: 32 minutes
- Part B: 22 minutes
- Series: Ultrasound Physics and Equipment
- Provided by: Dr Colin Deane, King’s College London