摘要小野剂量学是立体定向放射治疗、立体定向放射外科手术以及调强放疗等精确放疗技术中小照射野物理剂量精确性的理论基础。相比于常规射野，小野的应用增加了临床剂量的不确定度，而且剂量误差较常规射束大。为了确保小野剂量学和探测器标准化使用，在国家癌症中心/国家肿瘤质控中心的组织领导下，多家医疗单位共同参与，结合国内临床需求以及加速器特点等因素，建立了国内小野剂量学临床实践指南，内容主要涵盖了静态小野参考剂量和相对剂量的实践规程，使国内放疗单位能够安全可靠、快速准确地开展与小野相关的放射治疗技术。

abstractsThe dosimetry of small photon fields is the theoretical basis for the calculation accuracy of real physical dose in precise radiotherapy such as stereotactic radiotherapy, stereotactic radiosurgery and intensity modulated radiotherapy. Compared with conventional beam, small fields incline to introduce larger error in clinical application with increasing dose uncertainty. In order to ensure the small fields measuring accuracy and the specialized detector usage standardization, a clinical practice guideline of small fields dosimetry was established under the organization and leadership of National Cancer Center/National Cancer Quality Control Center with the cooperation of many large medical institutions in China. This guideline mainly covers the clinical procedures of reference dose and relative dose measurements in small static photon fields, thus domestic radiotherapy units can apply small field related radiotherapy technology safely, reliably, efficiently, and accurately.