Septal branches of the left anterior descending artery

Last revised by Craig Hacking on 9 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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