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A: Normal Judkins left guiding catheter 3.5 with its intrinsic primary and secondary curve.
B: Modifying the Judkins left guiding catheter, manually bending at 1.25 cm from the distal tip 90 degrees (black arrow) from its horizontal plane and holding it for a few minutes.
C: Modified Judkins catheter showing the bend (black arrow) oriented with the anterior rightward origin of the anomalous origin of the right coronary artery ostium.
