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Updated: Jul 29, 2026

Dosimetry for Cell Irradiation using Orthovoltage (40-300 kV) X-Ray Facilities
Published on: February 20, 2021
Radiation protection standards: their evolution from science to philosophy
R L Dixon1, Joel E Gray, B R Archer
1Department of Radiology, Wake Forest University School of Medicine, Winston-Salem, NC 27157-1088, USA. rdixon@wfubmc.edu
Abstract:
The concept of applying constraints on individual sources to a small fraction of the public dose limit has been deemed inappropriate when shielding the medical X-ray sources. This represents a broad-based consensus of medical physics and radiological societies in the United States, and the report series on the shielding design for medical X-ray sources (including dental, X-ray imaging and therapeutic X ray) from the National Council on Radiation Protection and Measurements (NCRP) utilises 1 mSv y(-1) as a source control limit. In the present study, the rationale for such a conclusion is discussed, and a somewhat critical look at the current model of radiation protection of the public is made.
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