Septal branches of the left anterior descending artery

Last revised by Assoc Prof Craig Hacking on 09 Feb 2021

The septal branches of the left anterior descending artery supply blood flow to the interventricular septum of the heart.


These are right-sided branches (on axial CTCA) from the left anterior descending artery.


They provide the main blood supply to the anterior interventricular septum. A smaller posterior section is also supplied from the posterior descending artery instead (see coronary arterial dominance).

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Cases and figures

  • Case 1: normal coronary angiogram (DSA)
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  • Case 2: normal CTCA
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