电离辐射技术在各行各业的日益广泛应用中，当数Ｘ射线诊断、核医学和放射治疗等医学应用历史最久，普及最广，影响最大。随着医疗卫生事业的不断发展，因疾病诊治目的以及各种健康需要而接受医疗照射的受检者与患者日益增多，众多受检者与患者的防护，理所当然地成为放射... Ionizing radiation technology In the increasingly wide range of applications in all walks of life, when the number of X-ray diagnosis, nuclear medicine and radiation therapy and other medical applications, the longest history, the most widespread and most affected. With the continuous development of medical and health care, the number of subjects and patients who receive medical exposure due to the purpose of disease diagnosis and treatment as well as various health needs is increasing, and the protection of many subjects and patients is of course become radiation ...