题目内容：

英语翻译
这些示踪剂在阿尔茨海默病患者认知功能下降的临床症状出现之前即能进行早期诊断,并能动态观察疾病变化及药物干预后的疗效,是极具潜力的新技术.

优质解答

These tracer in Alzheimer's cognitive decline in patients with clinical symptoms that can be carried out before the appearance of early diagnosis,and dynamic observation of changes in disease and the efficacy of drug intervention is the great potential of new technologies.