MRI-Guided Radiation Therapy Using MRI-Linear Accelerators-BDA99DF2

The International Commission on Radiation Units and Measurements (ICRU), since its inception in 1925, has had as its principal objective the development of internationally acceptable recommendations regarding:

1. quantities and units of ionizing radiation and radioactivity,
2. procedures suitable for the measurement and application of these quantities in clinical radiology and radiobiology, and
3. physical data needed in the application of these procedures, the use of which tends to assure uniformity in reporting.

The Commission also considers and makes similar types of recommendations for the radiation protection field. In this connection, its work is performed in cooperation with the International Commission on Radiological Protection (ICRP). ICRU endeavors to collect and evaluate the latest data and information pertinent to the problems of radiation measurement and dosimetry and to recommend the most acceptable numerical values for physical reference data and techniques for current use. The Commission’s recommendations are kept under continual review to keep abreast of the rapidly expanding uses of radiation. The ICRU feels that it is the responsibility of national organizations to introduce their own detailed technical procedures for the development and maintenance of standards. However, it urges that all countries adhere as closely as possible to the internationally recommended basic concepts of radiation quantities and units. The Commission maintains and develops a system of quantities and units and concepts (e.g., for radiation therapy) and guidance for measurement procedures and techniques having the widest possible range of applicability. Situations can arise from time to time for which an expedient solution of a current problem is required. The ICRU invites and welcomes constructive comments and suggestions regarding its recommendations and reports. These may be transmitted to the Chairman.