左心室肥厚是一個臨床上經由心臟造影常被發現的問題。有左心室肥厚代表心血管疾病的預後較差。左心室肥厚常見的原因包括運動員、高血壓、主動脈瓣狹窄、肥厚性心肌病變，浸潤性心臟病如類澱粉質沉積、法布瑞氏症等。傳統心臟超音波可以用來確定左心室肥厚、定量肥厚程度、評估是否有主動脈瓣狹窄等，但對於直接侵犯心肌的疾病比較難區分。心肌形變造影(應變造影)是一種運用亮點追蹤心臟超音波的方法，可以用來更好的評估左心室肥厚。這裡我們報告三個左心室肥厚的病例探討應變心臟超音波的運用，並做有關應變心臟超音波於常見左心室肥厚情況下的臨床運用。

Left ventricular hypertrophy (LVH) is a common finding from cardiac imaging in daily clinical practice. Presence of LVH is a poor prognostic factor for cardiovascular diseases. Variable reasons caused LVH, including athletes, arterial hypertension, aortic stenosis, hypertrophic cardiomyopathy, and infiltrative heart disease such as cardiac amyloidosis and Fabry disease. Although traditional echocardiography can be used for diagnosis of LVH, quantification of left ventricular mass, and identification of aortic stenosis, it is difficult to differentiate diseases involved in myocardium. Myocardial deformation imaging (strain image) is a new modality by using speckle tracking echocardiography. Strain imaging can be used for better evaluation of LVH. This article reported 3 cases of LVH, addressing roles of strain imaging, and with literature review for the application of strain imaging in evaluation of LVH.