CTICasesCorduroy Artifact in Digital Radiography
Imaging findings
Chest radiographs demonstrate faint, regular vertical striations (resembling grid lines) across the image plate. This occurred during portable digital radiography in patients with active mechanical devices (an Impella pump in one case, and a HeartMate LVAD in another).
Key takeaways
The 'corduroy' or electromagnetic interference artifact in digital radiography is caused by radiofrequency or electromagnetic emissions from the spinning motors of left ventricular assist devices (LVADs) or Impella pumps. This interference affects the digital plate's electronics during readout, producing characteristic grid-like lines.
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