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To study whether microwaves alter local cerebral blood flow.
|ばく露時間||continuous for 5, 15, 30, 45, or 60 min|
|Pulse width||2 µs|
|Repetition frequency||500 Hz|
The data indicate that microwave exposure causes a significant increase in local cerebral blood flow in the conscious rat. After 60 min of irradiation, the blood flow in all 17 brain regions sampled increased a minimum of 39%; many increased well over 100%. The data affect the selection of techniques to measure quantitavely the effects of microwaves on blood-brain barrier permeability. The authors conclude that previously reported blood-brain barrier permeability changes may be less in magnitude than originally indicated.