ABSTRACT
@#With the utilization of more types of radiation with a wider energy range, the application scope of the currently valid operational quantities is limited due to some conceptual defects, so a new group of operational quantities was proposed recently by the International Commission on Radiation Units and Measurements. The unification of protection quantities and operational ones is achieved in conceptual and physical sense. However, to achieve the comprehensive application of these new operational quantities in China, such preliminary work should be done as computational model construction and built-in of a calibration system in monitoring equipment, which depends on the collaborative development of multi-parties.
ABSTRACT
A set of new operational quantities for external radiation protection was proposed in ICRU Report 95. The new operational quantities were designed to overcome the conceptual and technical shortcomings of the existing operational quantities, and to achieve a better estimation of the protection quantities. This paper introduces the development of operational quantities, and the changes in their definitions, calculation phantoms and the application scopes, so as to fully understand the significance of the changes in the new operational quantities, which can be used as a reference for the relevant professionals.
ABSTRACT
@#Operational quantities, which are used to estimate protection quantities in the field of radiation protection, are important in area monitoring. The current operational quantities show certain limitations as the particle types and energy ranges are expanded. The International Commission on Radiation Units and Measurements Report 95 proposed a new system of operational quantities, where the definitions and phantoms of the operational quantities are consistent with the protection quantities, enabling better estimation of the protection quantities over wider ranges of particle types and energies. This paper focuses on the effects of the new recommended operational quantity system in area monitoring from the aspects of phantom application, conversion coefficient updating, and monitor design and calibration.
ABSTRACT
Resumen:Existen diversos documentos y recomendaciones internacionales sobre nombres, conceptos, definiciones y campos de aplicación para diversas magnitudes y unidades utilizadas para monitorear los niveles de radiación ionizante a los que son expuestos los trabajadores durante los procedimientos de Radiodiagnóstico e Intervencionismo. Sin embargo, la legislación nacional, al igual que para la dosimetría de los pacientes, no se encuentra actualizada en este sentido y no contempla en sus documentos un glosario actualizado que permita encontrar en forma rápida y precisa este tipo de información. Por lo anterior, este trabajo de revisión corresponde a un segundo documento guía, complementario a nuestro trabajo publicado en 2015 titulado "Magnitudes y unidades para dosimetría a pacientes en radiodiagnóstico e intervencionismo", que describe de manera didáctica y en un lenguaje sencillo para los profesionales de la salud y áreas afines, las principales magnitudes y unidades que se deben conocer y utilizar en la dosimetría ocupacional de los trabajadores que participan en procedimientos de Radiodiagnóstico e Intervencionismo.
Abstract: There are many documents and international recommendations offer names, concepts, definitions and fields of application for various quantities and units used to monitor the exposure levels of ionising radiation to which workers are exposed during the diagnostic and interventional radiology procedures. However, as in the case of patient dosimetry, national legislation is not up-to-date in this area and nowhere does it establish an up-to-date glossary that would facilitate rapid and precise location of this kind of information. In light of the foregoing, this review paper presents a second guidance document, complementary to our published article in 2015 titled "Quantities and units used in patient dosimetry in radiodiagnostic and intervencional procedures", which describes the principal quantities and units that must be known and used in occupational dosimetry for workers participating in diagnostic and interventional radiology procedures, in a didactical manner and using simple language for professionals in health and similar areas.