AIM To explore the application value of real-time three-dimensional transesophageal echocardiography for the structural characteristics of oval foramen.
METHODS The patients who received the foramen ovale from January 2018 to December 2020 were selected. The exit width, middle width, entrance width and channel length were measured by comparing the real-time three-dimensional transesophageal echocardiography (RT3D tee) and real-time two-dimensional transesophageal echocardiography (2D-TEE), and the median plane, right atrial PFO entrance surface and left atrial PFO exit surface were obtained.
RESULTS There was no significant difference in PFO alignment width between 2D-TEE and RT3D tee, but there were significant differences in average width, average length, entrance width, middle width and exit width. The number of shunt cases detected by 2D-TEE and rt3d-tee were 120 and 134 respectively, with significant difference between the two ultrasound methods. There was no significant difference between 2D-TEE and rt3d-tee in the detection rate of atrial septal aneurysm, left atrial septal pocket, mitral valve filaments and aortic valve filaments. PFO with dilated tumor and longer oval valve had no significant correlation with the time of closure, but the right atrial diameter of PFO had significant correlation with the time of closure.
CONCLUSION Real time three-dimensional transesophageal echocardiography clearly displays the three-dimensional structural characteristics of foramen ovale and it provides more accurate information for the morphological information of foramen ovale.
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