[名词解释] 慢性低灌注状态

何谓放射性图像融合技术? 麻疹的隔离期通常是() ["A．出疹后5天","B．出疹后7天","C．出疹后10天","D．并发肺炎者，出疹后10天","E．并发肺炎者，出疹后2周"] 放射事故 超级影像 气管异物出现以下临床表现各应属于 ["剧烈咳嗽及憋气甚至窒息()
无症状或仅有轻微咳嗽及喘鸣()
咳喘、痰多()
出现肺不张、肺气肿()A．异物进入期","B．安静期","C．刺激与炎症期","D．并发症期","E．后遗症期"] 慢性低灌注状态