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See Chinese contents: GBZ/T 201.1-2007 GBZ/T 201.1-2007: Radiation shielding requirements in room of radiotherapy installations -- Part 1: General principle
This Part specifies the dose reference control level, general shielding requirements and radiation shielding evaluation requirements for radiation shielding of room of radiotherapy installation. This Part is applicable to the room of external irradiation source treatment device.
