The International Journal of Radiation Medicine and Nuclear Medicine , administered by the Ministry of Health of the People’s Republic of China and sponsored by Chinese Medical Association(CMA) and Institute of Radiation Medicine, Chinese Academy of Medical Sciences, is one of the CMA journals. It mainly introduces the new trends, recent developments, up-to-date technologies，and the newly-acquired experience at home and abroad overseas and mainland in the fields of radiation medicine and nuclear medicine with the domestic situation. It's a national academic and informational journal. Since the first publication in 1977, it has published 150 issues over last 30 years. With the potential readers of middle-level or high-level scientific research personnel and clinicians, who are engaged in radiation medicine and nuclear medicine or other interrelated studies, which are in the forms of original article, reviews, reports in the international academic conference and the scientific investigations, the main columns of the journal involve Experimental Nuclear Medicine, Clinical Nuclear Medicine, Radioactive Labeling of Drugs, Radiation Biology, Clinical Radiation Medicine, Radiation Dosimetry and related standards and regulations. As an academic and informational professional publication, International Journal of Radiation Medicine and Nuclear Medicine is duty-bound to promote the development of radiation medicine and nuclear medicine, shoulders the task of providing new information timely, disseminating new knowledge, introducing new technologies and exploring new issues. It completely reflected the focus and research trends in this field in our country through the prompt tracing and introducing the new research achievements and tendency of our foreign counterparts. Therefore, it has played an active role in scientific research, clinical practice and teaching of this branch of medical sciences, in addition to the cultivation of the qualified scientific personnel. Being one of major professional academic periodicals, the journal had been indexed by ①Chinese Academic Journal Comprehensive Evaluation Database; ② Chinese Journal Full-text Database; ③Chinese Core Journ al(selection)Database; ④Chinese Science and Technology Periodicals Database; ⑤Chinese Medical Current Contents. According to the statistical data of “Chinese Journal Citation Report” in 2007, the Impact Factor of this journal in 2006 is 0.291 and the Cited Rate is 0.94.