CARAT Case Studies: Coronary Artery Variants and Anomalies (CAVA)

Case Study A06-2: Dominant LCx from RCA and Diagonal to dPDA

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LCA – RAO 6 Cran 40
Pathway of large diagonal to dPDA is seen. Septal arcade and large axial diagonal well visualized.

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LCx – LAO 34 AP
Dominant LCx branch layout.

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LCx – RAO 26 Caud 24
LCx pathway behind aorta.

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RCA – LAO 4 Cran 38
Non-dominant RCA.

Anatomy – Two anomalies seen: LCx from RCA posterior to aorta; and proximal diagonal extending to dPDA territory.

Construction – (Select Settings > Choose Button Q Nums.) Template button Q1.6 sets the stage for LCx anomaly. The anomalous LCA branch to the dPDA is accomplished by > selecting Q6.2.3.1 from the Marginal template > selecting the Size 3 ALM > chosing the “Anomalous to dPDA” option >  moving this branch from the LCx to the proximal LAD.

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