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Emboli can be directly visualized in 20 % of cases .

在20%的病例中可直接观察到栓子。

Palpitations or emboli from atrial fibrillation .

心房纤颤致心悸或栓塞。

The heart is a common source for such emboli .

心脏是这种拴子的常见来源。

The presence of angiographic coronary artery disease was not significantly associated with preexisting retinal emboli .

血管造影证实为冠心病与术前是否存在视网膜动脉栓塞无明显相关性。

The doppler ultrasound technique is widely used in the emboli detection because of its advantages in the blood flow measurement .

超声多普勒技术以其在血流测量方面的独特优势在栓子检测中有着广泛的应用。