In intravascular imaging, which statement best describes its typical use during PCI?

In intravascular imaging, which statement best describes its typical use during PCI?

• A. It is primarily used to replace angiography entirely.
• B. It is only used after stent placement.
• C. For accurate lesion assessment, sizing, and detection of underexpansion to optimize stent results.
• D. It has no role in routine PCI.

Answer: (C)

Intravascular imaging provides inside-the-vessel detail that complements angiography, letting you see the true lumen size, reference vessel diameter, and plaque or calcium burden. This precise sizing is crucial because selecting the correct stent diameter (and sometimes length) directly affects how well the stent will expand and fit the vessel. After deployment, imaging can reveal underexpansion or poor apposition that angiography might miss, guiding targeted post-dilation to achieve complete expansion and secure apposition. That combination—accurate lesion assessment, proper sizing, and detection of underexpansion to optimize stent results—is why this technique is used during PCI. It doesn’t replace angiography, and it’s not limited to after stent placement; it’s used to inform decisions before, during, and after the intervention, especially in complex cases where precise measurements matter.

Intravascular imaging provides inside-the-vessel detail that complements angiography, letting you see the true lumen size, reference vessel diameter, and plaque or calcium burden. This precise sizing is crucial because selecting the correct stent diameter (and sometimes length) directly affects how well the stent will expand and fit the vessel. After deployment, imaging can reveal underexpansion or poor apposition that angiography might miss, guiding targeted post-dilation to achieve complete expansion and secure apposition. That combination—accurate lesion assessment, proper sizing, and detection of underexpansion to optimize stent results—is why this technique is used during PCI. It doesn’t replace angiography, and it’s not limited to after stent placement; it’s used to inform decisions before, during, and after the intervention, especially in complex cases where precise measurements matter.