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Diagnostic ultrasound ( PDFDrive )

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e8

APPENDIX

Ultrasound Artifacts: A Virtual Chapter

FIG. A.15 Mirror Image. Picture of relection in water—similar to mirror image artifact.

FIG. A.16 Mirror Image Artifact. Soft tissue–gas interfaces, such as the diaphragm, are excellent relectors of the sound beam owing to the

large difference in the acoustic impedance between the two materials. Therefore hepatic structures are frequently seen mirrored beyond the

diaphragm onto the lungs. These two igures show liver parenchyma, hepatic veins in part A, and a hepatic hemangioma in part B all inversely

projected onto lung.

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