Abstract:Aim To study the displacement,strain and strain rate of abdominal aorta by tissue tracking and strain rate imaging imaging(SRI) in healthy person and patients with coronary heart disease(CHD).To analyse the correlation between the everity of coronary artery lesions and the kinetic character of abdominal aorta. Methods Tissue tracking and SRI measured by GE Vivid ultrasound diagnostic apparatus were performed in 69 patients with CHD and 70 healthy subjects.All of the patients had accepted coronary angiography and the diagnoses of CHD were confirmed.Patients with CHD were divided into single branch coronary artery lesions group and multi-branch coronary artery lesions group. Results There were significant difference between healthy person and patients with CHD at the displacement of anterior and posterior wall in abdominal aorta,maximum strain of posterior wall in abdominal aorta,the systolic peak strain rate of anterior wall in abdominal aorta and the systolic peak strain rate,the early diastolic peak strain rate and the late diastolic peak strain rate of posterior wall in abdominal aorta.There were also significant difference between single branch and multi-branch coronary artery lesions group at the displacement,strain and strain rate of of anterior and posterior wall in abdominal aorta abdominal aorta. Conclusion The displacement,strain and strain rate of abdominal aorta have prognosticate value for CHD and agreed with the severity of coronary artery lesions in patients with CHD.