Coronary clearance frame count has a good correlation with known indices of reperfusion and has the advantage of being an objective, quantitative index that is efficient even in inexperienced hands. Abbreviated Abstract. The angiographic quality of myocardial perfusion data obtained following direct angioplasty in acute myocardial infarction can only be evaluated by qualitative methods: the myocardial blush grade or the TIMI myocardial perfusion grade. To minimize the subjective nature of these methods, we describe a quantitative index (the "coronary clearance frame count") which we evaluated against the other well-established indices, and have observed it to be efficient even in the hands of inexperienced practitioners.
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