结论高机械指数的体表超声辅以高剂量超声造影剂在经颅脑超声造影中可导致血脑屏障通透性增加，但在造影检查后，这种改变可自行恢复。
Conclusions the combine use of the high MI ultrasound and the high dosage of the ultrasound contrast agent can enhance the permeability of the BBB, but this change is reversible.
对60例窒息新生儿同时进行颅脑超声和心电图检查。
To report the results of ECG and cerebral ultrasonogram simultaneously obtained in 60 asphyxiated newborn infants.
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