Methods : Transvenous MCE was performed and after LAD stenosis in 12 dogs.

方法对12条犬于左前降支(LAD)狭窄前后行静脉心肌声学造影.

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Objective To evaluate quantitatively perfusion in coronary microcirculation by transvenous myocardial contrast echocardiography ( MCE ) .

目的评价静脉心肌声学 造影 定量评估冠脉微循环血流灌注的可行性.

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Objective To manufacture and observe the effect of a new type transvenous temporary pacing lead.

目的研制并观察新型经静脉临时起搏电极导管应用的效果.

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