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Coronary Anatomy
Suhny Abbara, MD, FACR, FSCCT; Michael T. Lu, MD
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TERMINOLOGY

  • Abbreviations

    • Coronary arteries and their branches
      • Left main (LM) coronary artery
      • Left anterior descending (LAD) coronary artery
        • Proximal, mid, and distal LAD (pLAD, mLAD, dLAD)
        • Diagonal branches: D1, D2, D3, etc.
      • Ramus intermedius (RI)
      • Left circumflex (LCX)
        • Proximal and mid/distal LCX (pCx, LCX)
        • Obtuse marginal branches: OM1, OM2, OM3, etc.
      • Posterior lateral branch (PLB)
      • Posterior left ventricular (PLV) branch
      • Posterior descending artery (PDA)
      • Right coronary artery (RCA)
        • Proximal, mid, and distal RCA (pRCA, mRCA, dRCA)
        • Acute marginal (AM) branch
      • Sinoatrial node (SAN) branch
      • Atrioventricular node (AVN) branch
    • Grafts
      • Saphenous vein graft (SVG)
      • Coronary artery bypass graft (CABG)
      • Left internal mammary artery (LIMA)
      • Right internal mammary artery (RIMA)
    • Alternative international nomenclature
      • Ramus interventricularis anterior (RIVA) = LAD
      • Ramus circumflexus (RCx) = LCX
      • Ramus interventricularis posterior (RIVP, RIP) = PDA
      • Ramus marginalis (RM or M) = OM
      • Right posterolateral branch (RPL) = PLV branch from RCA
        • Ramus posterolateralis dexter (RPD) = PLV branch from RCA; careful not to confuse with abbreviation for right posterior descending artery
      • Right posterior descending artery (RPD) = PDA from RCA
  • Synonyms

    • Epicardial arteries

IMAGING ANATOMY

  • Overview

    ANATOMY

    • LM

      • LAD

        • LCX

          • RCA

            • Dominance

              CORONARY ARTERY SEGMENTATION

              • Society of Cardiovascular Computed Tomography Definitions

                NORMAL VARIANTS AND ANOMALIES

                • General Considerations

                  • Anomalies of Origin and Course

                    • Anomalies of Intrinsic Anatomy

                      • Anomalies of Termination

                        CARDIAC VEINS

                          Selected References

                          1. Abbara S et al: SCCT guidelines for the performance and acquisition of coronary computed tomographic angiography: a report of the society of Cardiovascular Computed Tomography Guidelines Committee: Endorsed by the North American Society for Cardiovascular Imaging (NASCI). J Cardiovasc Comput Tomogr. 10(6):435-49, 2016
                          2. Leipsic J et al: SCCT guidelines for the interpretation and reporting of coronary CT angiography: a report of the Society of Cardiovascular Computed Tomography Guidelines Committee. J Cardiovasc Comput Tomogr. 8(5):342-58, 2014
                          3. Raff GL et al: SCCT guidelines for the interpretation and reporting of coronary computed tomographic angiography. J Cardiovasc Comput Tomogr. 3(2):122-36, 2009
                          4. Abbara S et al: Noninvasive evaluation of cardiac veins with 16-MDCT angiography. AJR Am J Roentgenol. 185(4):1001-6, 2005
                          Related Anatomy
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                          References
                          Tables

                          Tables

                          TERMINOLOGY

                          • Abbreviations

                            • Coronary arteries and their branches
                              • Left main (LM) coronary artery
                              • Left anterior descending (LAD) coronary artery
                                • Proximal, mid, and distal LAD (pLAD, mLAD, dLAD)
                                • Diagonal branches: D1, D2, D3, etc.
                              • Ramus intermedius (RI)
                              • Left circumflex (LCX)
                                • Proximal and mid/distal LCX (pCx, LCX)
                                • Obtuse marginal branches: OM1, OM2, OM3, etc.
                              • Posterior lateral branch (PLB)
                              • Posterior left ventricular (PLV) branch
                              • Posterior descending artery (PDA)
                              • Right coronary artery (RCA)
                                • Proximal, mid, and distal RCA (pRCA, mRCA, dRCA)
                                • Acute marginal (AM) branch
                              • Sinoatrial node (SAN) branch
                              • Atrioventricular node (AVN) branch
                            • Grafts
                              • Saphenous vein graft (SVG)
                              • Coronary artery bypass graft (CABG)
                              • Left internal mammary artery (LIMA)
                              • Right internal mammary artery (RIMA)
                            • Alternative international nomenclature
                              • Ramus interventricularis anterior (RIVA) = LAD
                              • Ramus circumflexus (RCx) = LCX
                              • Ramus interventricularis posterior (RIVP, RIP) = PDA
                              • Ramus marginalis (RM or M) = OM
                              • Right posterolateral branch (RPL) = PLV branch from RCA
                                • Ramus posterolateralis dexter (RPD) = PLV branch from RCA; careful not to confuse with abbreviation for right posterior descending artery
                              • Right posterior descending artery (RPD) = PDA from RCA
                          • Synonyms

                            • Epicardial arteries

                          IMAGING ANATOMY

                          • Overview

                            ANATOMY

                            • LM

                              • LAD

                                • LCX

                                  • RCA

                                    • Dominance

                                      CORONARY ARTERY SEGMENTATION

                                      • Society of Cardiovascular Computed Tomography Definitions

                                        NORMAL VARIANTS AND ANOMALIES

                                        • General Considerations

                                          • Anomalies of Origin and Course

                                            • Anomalies of Intrinsic Anatomy

                                              • Anomalies of Termination

                                                CARDIAC VEINS

                                                  Selected References

                                                  1. Abbara S et al: SCCT guidelines for the performance and acquisition of coronary computed tomographic angiography: a report of the society of Cardiovascular Computed Tomography Guidelines Committee: Endorsed by the North American Society for Cardiovascular Imaging (NASCI). J Cardiovasc Comput Tomogr. 10(6):435-49, 2016
                                                  2. Leipsic J et al: SCCT guidelines for the interpretation and reporting of coronary CT angiography: a report of the Society of Cardiovascular Computed Tomography Guidelines Committee. J Cardiovasc Comput Tomogr. 8(5):342-58, 2014
                                                  3. Raff GL et al: SCCT guidelines for the interpretation and reporting of coronary computed tomographic angiography. J Cardiovasc Comput Tomogr. 3(2):122-36, 2009
                                                  4. Abbara S et al: Noninvasive evaluation of cardiac veins with 16-MDCT angiography. AJR Am J Roentgenol. 185(4):1001-6, 2005