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Clutter-Generating Phantom Material. Part I: Development of a Tunable, Acoustic Clutter-Generating Layer for Use With
Katelyn Flint1, Matthew Huber1, James Long2
1Department of Biomedical Engineering, Duke University, Durham, NC, USA.
Ultrasound in Medicine & Biology
|February 9, 2025
Summary
Researchers developed a novel phantom material to introduce calibrated acoustic clutter into laboratory ultrasound imaging tests. This material allows for adjustable clutter levels, improving the realism of ultrasound equipment testing.
Area of Science:
- Medical Imaging
- Acoustics
- Materials Science
Background:
- Acoustic clutter significantly degrades in vivo ultrasound images.
- Laboratory testing of ultrasound equipment often lacks realistic clutter simulation.
- Accurate clutter representation is crucial for reliable equipment evaluation.
Purpose of the Study:
- To develop a phantom material capable of introducing calibrated acoustic clutter.
- To enable realistic simulation of clutter in laboratory ultrasound testing.
- To improve the accuracy and relevance of ultrasound equipment evaluation.
Main Methods:
- Leveraged the adjustable speed of sound in agar by propanol exposure.
- Created agar spheres soaked in propanol solution, strained, and immersed in mineral oil.
- Utilized mineral oil to create a clutter-generating medium.
Main Results:
- Achieved adjustable contrast degradation levels up to approximately 15 dB.
- Demonstrated phantom material stability for at least 21 days post-tuning.
- Observed that clutter characteristics change over time once the phantom is in mineral oil.
Conclusions:
- A novel clutter-generating phantom material has been successfully demonstrated.
- This phantom can be integrated with standard ultrasound imaging phantoms.
- The material offers a method for calibrated clutter introduction in laboratory settings.
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