Determination of Optimal Fluoroscopic Angulations for Left Main Coronary Artery Ostial Interventions: 3-Dimensional Computed Tomography Validation

Figure 3

The blue reference line crossed the center of the cusp plane and the NCC-RCC commissure (bottom left corner). The NCC and RCC overlapped when viewed in the coronary plane. The angulation of NCC and RCC overlapping would be seen at the bottom of the coronary plane (right). NCC = noncoronary cusp; RCC = right coronary cusp. LAO = left anterior oblique; RAO = right anterior oblique; CRA = cranial; CAU = caudal.