摘要影像学检查的选择是否合理是临床实践中的重要问题。基于循证医学的"影像学检查的临床适用性评价"，即针对临床诊疗需求（某一特定疾病、综合征等诊断或评估），影像科与临床科室医师基于循证医学证据、专业技能和经验、患者意愿，共同慎重评价某种影像学检查的必要性及检查选择的合理性。必要性是前提，合理性是核心，证据质量评价是基石，循证医学方法是重要手段。评估成果将形成系列标准，以指南方式呈现，为临床医师针对临床诊疗需求合理选择影像学检查方法提供依据。通过影像科和临床科室医师的深度合作与共同努力，建立并不断完善我国影像学检查的临床适用性评价体系，保证临床诊疗流程的合理化、规范化，促进医疗资源优化配置和使用。

abstractsThe rational clinical examination is important. The authors raised the concept of "medical imaging clinical appropriateness (MICA) " to meet the medical need in clinic (for diagnosis or assessment of a kind of disease or syndrome), which means radiologists and clinicians work together to carefully evaluate the necessity and rationality of an examination according to evidence of evidence-based medicine, expertise, experience, and patient′s willing.The necessity is prerequisite, the rationality is the core, the evaluation of evidence is the basis, the application of evidence-based medicine is the important method. This work will provide us a series of criteria in the format of guidelines, providing evidence of rational examination for clinicians. Based on hard working and cooperation between radiologists and clinicians, we will establish the system of MICA in China, standardizing medical process, promoting rationalization, optimizing medical resources allocation and usage.