ISO/TR 24422:2022

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ISO/TR 24422:2022 is an international standard focusing on the development of a water equivalent phantom for measuring the physical characteristics of specific radiosurgery treatment devices. It outlines a procedure for constructing and calibrating a polystyrene phantom, particularly designed for Gamma Knife radiosurgery facilities. This standard is not intended for general dosimetry protocols. The phantom is used to ensure the accurate measurement of absorbed dose and standardize the dose distribution produced by radiation therapy devices.