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Using simple experimental models for lung ultrasound, we evaluated the relationship of the attenuation inside the sources of vertical artifacts to the echo intensity and attenuation of artifacts. As sources of artifacts, we made 10 different hemispherical gel objects with two different mediums (pure agar or agar containing graphite with an attenuation coefficient of 0.5dB/cm · MHz) and five different diameters (3.6, 5.6, 7.5, 9.5, or 11.4mm). Ten of each hemispherical gel object were prepared for the statistical analyses. Each object was p
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