为一篇英语论文写一份摘要，包含研究目的、方法和主要结论。
一篇名为“人工智能在医疗系统中的应用”的英文论文。
This paper examines the application of artificial intelligence (AI) in medical systems. The purpose of this study is to explore the potential of AI in improving the accuracy and efficiency of diagnosis, treatment and patient outcomes. The methodology used includes a review of relevant literature and case studies of AI in medical systems. The main conclusion is that AI has significant potential in improving medical outcomes, but ethical and privacy concerns must also be addressed.