Application of the 3-dimensional speckle tracking imaging on the evaluation of left ventricular wall motion in patients with coronary artery disease before and after PCI

Objective:To observe the systolic function of left ventricular in patients with coronary artery disease(CAD) before and after the percutaneous coronary intervention(PCI) by 3-dimensional speckle tracking imaging(3D-STI).Methods:The 3D-STI data of 50 CAD patients(CAD group) before and after 3 to 7 days and 3 months of PCI and 30 healthy people(control group) were analyzed.The circumferential strain peaks(CSpeak) of each myocardial segment of left ventricular wall were measured.Results:Compared with the control group, the CSpeak in CAD group before and after PCI was decreased.Compared with before PCI, the CSpeak in CAD group after 3 to 7 days of PCI was increased.After 3 months of PCI, changes of the CSpeak in CAD group were significant(P<0.01).Conclusions:The myocardial deformation ability in patients with coronary artery disease is decreased, which can be improved after PCI.The 3D-STI can accurately assess the left ventricular systolic function in patients with coronary artery disease.