unprotected left main trunk 无保护左主干病变
The rates of detection with IVUS were more than those with CAG for calcified lesion, eccentric lesion, diffuse lesion and lesions in left main trunk and bifurcation(P<0.05).
IVUS对离心性、钙化、左主干、分叉部位和弥漫性病变的检出率显著高于CAG（P< 0 .0 5 ）。
The main pulmonary trunk and pulmonary arteries to right and left lungs are seen here opened to reveal a large "saddle" pulmonary thromboembolus.
可见剖开的肺动脉主干和左肺动脉右肺动脉内有一个大的鞍状的肺血栓栓子。
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