Coronary artery lesion irregularity is assessed visually using a well defined grading system:
Grade 0: Smooth – no irregularity.
Grade 1: Mildly Irregular – lesion has an indistinct lumen edge.
Grade 2: Sawtoothed/Grossly Irregular – lesion has defined jagged or “sawtoothed” lumen edges.
NOTE: The presence of an ulcer, dissection, or thrombus will also make a lesion irregular.
What does the term "irregular lesion" mean in the context of coronary angiography?
<s>[INST] Answer the question truthfully, you are a medical professional. This is the question: What does the term "irregular lesion" mean in the context of coronary angiography? [/INST] \n Coronary artery lesion irregularity is assessed visually using a well defined grading system:
Grade 0: Smooth – no irregularity.
Grade 1: Mildly Irregular – lesion has an indistinct lumen edge.
Grade 2: Sawtoothed/Grossly Irregular – lesion has defined jagged or “sawtoothed” lumen edges.
NOTE: The presence of an ulcer, dissection, or thrombus will also make a lesion irregular.</s>