Gao Z, Bortman J, Mahmood F, Matyal R, Khabbaz K. Crossed Swords Sign: A 3-Dimensional Echocardiographic Appearance. Anesthesia and Analgesia Practice. 2019;12(11):416-419.
Valve Research Group
An Echocardiography and Cardiovascular Research Collaboration
Department of Anesthesia, Critical Care & Pain Management and Department of Surgery, Division of Cardiac Surgery
Beth Israel Deaconess Medical Center