Matching Pairs Ultrasound Physics ArtifactsOnline version Match the Artifact to its description by Maryglo Stroik 1 appear as a single long hyperechoic echo located parallel to sound beams’ main axis 2 Hyperechoic side-to-side region (appears the same as the foreground color) Results from increased intensity at the focus 3 appear equally spaced are located parallel to the sound beam’s main axis are located at ever-increasing depths 4 2nd copy of a true reflector Artifact appears deeper than true 5 artifacts degrade lateral resolution 6 The sound beam refracts at the edge of a curved reflector resulting in a drop of intensity. The decrease in intensity causes the shadowing 7 Hypoechoic or anechoic region extending downward from a highly attenuating structure 8 When medium’s speed is slower than that in soft tissue 9 Located beneath a structure with abnormally low attenuation (such as fluid-filled structures: bladder, gb, cysts) 10 2nd copy of the reflector Copy is side by side, or at the same depth as the true reflector
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