Culprit artery planimetry
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]
Definition
A drawing and measurement method made at end diastole at each time point down the middle of the contrast filled culprit native artery. However, for grafts, the QCA should be performed at end systole and not at end diastole like for native artery segments.
The catheter should be replicated on the drawing, and the following landmarks should be noted: the catheter tip/origin of the culprit artery, the start & end of the lesion “Length”, the distal TIMI landmark, and the very end of the artery.
Planimetered Length to Lesion (no branches): Planimetered length from catheter tip to the start of the lesion. If the culprit artery is the circumflex, the length of the Left Main should also be measured.
Planimetered Length from Lesion to Landmark: Planimetered length from the end of the lesion to the distal TIMI landmark.
Planimetered Length from Lesion to Very End of Artery: Planimetered length from the end of the lesion to the most distal segment of artery (if visible).
Complete Assessment of Vessel Length: It should be marked if the ‘Planimetered Length from Lesion to Very End of Artery’ is assessable.