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Mayo Clinic has one of the largest and most experienced practices in the United States, with campuses in Arizona, Florida and Minnesota. Staff skilled in dozens of specialties work together to ensure quality care and successful recovery.

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Displaying 11-11 out of 11 doctors available

Last Name Initial: A

  1. Chadi Ayoub, M.B.B.S., Ph.D.

    Chadi Ayoub, M.B.B.S., Ph.D.

    1. Cardiologist
    2. Echocardiographer
    3. Cardiac Imager
    4. Cardio-Oncologist
    1. Phoenix, AZ
    Areas of focus:

    Stress echocardiogram, Left atrial appendage closure, Transesophageal echocardiogram, Echocardiogram, Percutaneous valv...e procedure, Intraoperative echocardiography, Heart valve disease, Hypertrophic cardiomyopathy, Tricuspid valve disease, Mitral valve disease, Aortic valve disease, Structural heart disease, Carcinoid heart disease, Cardiac complication of cancer treatment

Research Profiles

Aug. 21, 2026
  1. Echocardiogram (echo). American Heart Association. https://www.heart.org/en/health-topics/heart-attack/diagnosing-a-heart-attack/echocardiogram. Accessed Aug. 13, 2026.
  2. Echocardiography. Merck Manual Professional Version. https://www.merckmanuals.com/professional/cardiovascular-disorders/cardiovascular-tests-and-procedures/echocardiography. Accessed Aug. 13, 2026.
  3. Electrocardiography. Merck Manual Professional Version. https://www.merckmanuals.com/professional/cardiovascular-disorders/cardiovascular-tests-and-procedures/electrocardiography. Accessed Aug. 13, 2026.
  4. Heart tests. National Heart, Lung, and Blood Institute. https://www.nhlbi.nih.gov/health/heart-tests. Accessed Aug. 13, 2026.
  5. Ejection fraction heart failure measurement. American Heart Association. https://www.heart.org/en/health-topics/heart-failure/diagnosing-heart-failure/ejection-fraction-heart-failure-measurement. Accessed Aug. 13, 2026.
  6. Testing for heart valve problems. American Heart Association. https://www.heart.org/en/health-topics/heart-valve-problems-and-disease/getting-an-accurate-heart-valve-diagnosis/testing-for-heart-valve-problems. Accessed Aug. 13, 2026.
  7. Cardiac stress testing. Merck Manual Professional Version. https://www.merckmanuals.com/professional/cardiovascular-disorders/cardiovascular-tests-and-procedures/cardiac-stress-testing. Accessed Aug. 13, 2026.
  8. Transesophageal echocardiography. American Heart Association. https://www.heart.org/en/health-topics/heart-attack/diagnosing-a-heart-attack/transesophageal-echocardiography. Accessed Aug. 13, 2026.
  9. Ultrasound imaging. U.S. Food and Drug Administration. https://www.fda.gov/radiation-emitting-products/medical-imaging/ultrasound-imaging. Accessed Aug. 13, 2026.
  10. Ali MT, et al. Incidence of severe adverse drug reactions to ultrasound enhancement agents in a contemporary echocardiography practice. Journal of the American Society of Echocardiography. 2024; doi:10.1016/j.echo.2023.10.010.
  11. Ocagli H, et al. Type, severity, frequency and management of adverse reactions associated with ultrasound contrast agents: A systematic review and meta-analysis. European Radiology. 2026; doi:10.1007/s00330-026-12594-5.
  12. Zhang L, et al. Transesophageal echocardiography related complications. Frontiers in Cardiovascular Medicine. 2024; doi:10.3389/fcvm.2024.1410594.
  13. Lang RM, et al. Recommendations for cardiac chamber quantification by echocardiography in adults: An update from the American Society of Echocardiography and the European Association of Cardiovascular Imaging. Journal of the American Society of Echocardiography. 2015; doi:10.1016/j.echo.2014.10.003.
  14. IAC standards and guidelines for adult echocardiography accreditation. Intersocietal Accreditation Commission. https://intersocietal.org/document/adult-echocardiography-accreditation-standards/. Accessed Aug. 13, 2026.

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