The Society of Nuclear Medicine and Molecular Imaging (SNMMI) is an international scientific and professional organization founded in 1954 to promote the science, technology, and practical application of nuclear medicine. The European Association of Nuclear Medicine (EANM) is a professional nonprofit medical association that facilitates communication worldwide between individuals pursuing clinical and research excellence in nuclear medicine. The EANM was founded in 1985. The EANM was founded in 1985. SNMMI and EANM members are physicians, technologists, and scientists specializing in the research and practice of nuclear medicine.

The SNMMI and EANM will periodically define new guidelines for nuclear medicine practice to help advance the science of nuclear medicine and to improve the quality of service to patients throughout the world. Existing practice guidelines will be reviewed for revision or renewal, as appropriate, on their fifth anniversary or sooner, if indicated.

Each practice guideline, representing a policy statement by the SNMMI/EANM, has undergone a thorough consensus process in which it has been subjected to extensive review. The SNMMI and EANM recognize that the safe and effective use of diagnostic nuclear medicine imaging requires specific training, skills, and techniques, as described in each document. Reproduction or modification of the published practice guideline by those entities not providing these services is not authorized.

These guidelines are an educational tool designed to assist practitioners in providing appropriate care for patients. They are not inflexible rules or requirements of practice and are not intended, nor should they be used, to establish a legal standard of care. For these reasons and those set forth below, both the SNMMI and the EANM caution against the use of these guidelines in litigation in which the clinical decisions of a practitioner are called into question.

The ultimate judgment regarding the propriety of any specific procedure or course of action must be made by the physician or medical physicist in light of all the circumstances presented. Thus, there is no implication that an approach differing from the guidelines, standing alone, is below the standard of care. To the contrary, a conscientious practitioner may responsibly adopt a course of action different from that set forth in the guidelines when, in the reasonable judgment of the practitioner, such course of action is indicated by the condition of the patient, limitations of available resources, or advances in knowledge or technology subsequent to publication of the guidelines.

The practice of medicine includes both the art and the science of the prevention, diagnosis, alleviation, and treatment of disease. The variety and complexity of human conditions make it impossible to always reach the most appropriate diagnosis or to predict with certainty a particular response to treatment.

Therefore, it should be recognized that adherence to these guidelines will not ensure an accurate diagnosis or a successful outcome. All that should be expected is that the practitioner will follow a reasonable course of action based on current knowledge, available resources, and the needs of the patient to deliver effective and safe medical care. The sole purpose of these guidelines is to assist practitioners in achieving this objective.

核医学与分子影像学会 （SNMMI） 是一个国际科学和专业组织，成立于 1954 年，旨在促进核医学的科学、技术和实际应用。欧洲核医学协会 （EANM） 是一个专业的非营利性医学协会，旨在促进全球追求核医学临床和研究卓越的个人之间的交流。EANM 成立于 1985 年。EANM 成立于 1985 年。SNMMI 和 EANM 成员是专门从事核医学研究和实践的医生、技术人员和科学家。

SNMMI 和 EANM 将定期为核医学实践制定新的指南，以帮助推进核医学科学并提高对全球患者的服务质量。现有的实践指南将在其五周年或更早（如有需要）酌情进行修订或更新。

每个实践指南都代表了 SNMMI/EANM 的政策声明，都经过了彻底的共识过程，并接受了广泛的审查。SNMMI 和 EANM 认识到，安全有效地使用诊断性核医学成像需要特定的培训、技能和技术，如每份文件所述。不提供这些服务的实体未经授权复制或修改已发布的实践指南。

这些指南是一种教育工具，旨在帮助从业者为患者提供适当的护理。它们不是僵化的规则或实践要求，也不打算也不应该用于建立法律的护理标准。出于这些原因以及下文所述的原因，SNMMI 和 EANM 都警告不要在从业者的临床决定受到质疑的诉讼中使用这些指南。

关于任何特定程序或行动方案的适当性的最终判断必须由医生或医学物理学家根据所提出的所有情况做出。因此，并不意味着单独使用与指南不同的方法低于护理标准。相反，当从业者合理判断时，如果患者的状况、可用资源的局限性或指南发布后知识或技术的进步表明了这种行动方案，则尽职尽责的从业者可以负责任地采取与指南中规定的行动方案不同的行动方案。

医学实践包括预防、诊断、缓解和治疗疾病的艺术和科学。人类状况的多样性和复杂性使得不可能总是得出最合适的诊断或确定地预测对治疗的特定反应。

因此，应该认识到，遵守这些指南并不能确保准确的诊断或成功的结果。应该期望的是，从业者将根据当前知识、可用资源和患者的需求遵循合理的行动方案，以提供有效和安全的医疗保健。这些指南的唯一目的是帮助从业者实现这一目标。