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Other artifacts

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A few other artifacts can also interfere in IVUS interpretation; side lobes and ghost artifacts also generated from strong echoreflectors such as calcium and stent metal [5]. In longitudinal or L‐mode display, catheter motion artifacts during the pullback results in a “saw tooth” appearance.

Catheter position also has an important role in image quality. Off axis position of the catheter can alter vessel geometry in an elliptical fashion to mislead the operator to overestimate the lumen and vessel area. Axial (antegrade–retrograde) movement of the IVUS probe during the cardiac cycle scrambles consecutive image slices that can have implications for three‐dimensional reconstruction and attempts to assess coronary artery compliance.

Interventional Cardiology

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