Among 368 people aged 50 and than 50 years, aortic valve calcification (AVC) was detected by 2-dimensional echocardiography in 92 people( 25.0% ), the incidence of AVC was increasing with the aging process.

• 用二维超声心动图和彩色血流显像技术对368名50岁以上的高龄患者进行检测，查出患有主动脉瓣钙化（AVC）者92例（25.；0%25）发病率随年龄增大而增高。