Artifact

Category Artifact Term Grating Lobe Artifact Definition of Grating Lobe Artifact Additional Lobes From Array Element Spacing Causing Mirror Or Ghost Echoes Notes About Grating Lobe Artifact Reduced By Apodization And Probe Design

Category Artifact Term Ghosting Artifact Definition of Ghosting Artifact Repeating Faint Images Along Phase Encoding Direction Often From Periodic Motion Notes About Ghosting Artifact Common With Cardiac Or Respiratory Motion

Category Artifact Term Truncation Artifact (Gibbs) Definition of Truncation Artifact (Gibbs) Ringing Near Sharp Edges Due To Finite Sampling In K Space Notes About Truncation Artifact (Gibbs) Reduced By Increasing Matrix Or Apodization

Category Artifact Term Motion Artifact Definition of Motion Artifact Blurring Or Ghosting From Patient Movement During Acquisition Notes About Motion Artifact Mitigate With Faster Sequences, Gating, Or Restraint

Category Artifact Term Sedimentation Artifact Definition of Sedimentation Artifact Layering Of Particulate Material Within Fluid Causing Echogenic Interfaces Notes About Sedimentation Artifact Seen In Complex Effusions

Category Artifact Term Mirror Image Artifact Definition of Mirror Image Artifact Duplicate Structure Appears on the Opposite Side of a Strong Reflector Due to Reflection Path Notes About Mirror Image Artifact Seen Near Diaphragm and Pleura

Category Artifact Term Reverberation Artifact Definition of Reverberation Artifact Multiple Equally Spaced Echoes From Bouncing Between Strong Reflectors or Probe and Tissue Notes About Reverberation Artifact Common Near Pleura or Metallic Objects

Category Artifact Term Ring Down Artifact Definition of Ring Down Artifact Continuous Echo Distal To Gas Bubbles Caused By Resonance Notes About Ring Down Artifact Seen In Pneumobilia Or Air Containing Structures

Category Artifact Term Zipper Artifact Definition of Zipper Artifact Linear Band Of Noise Across Image Caused By RF Interference Or Faulty Shielding Notes About Zipper Artifact Check Room Shielding And Equipment

Category Artifact Term Phase Cancellation Definition of Phase Cancellation Reduction Or Loss Of Echoes When Out Of Phase Signals Interfere Notes About Phase Cancellation Can Reduce Visibility Of Small Structures