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Radiation Protection Dosimetry 54:299-302 (1994)
© 1994 Oxford University Press

The Implications of ICRP 60 on the Monitoring of Pregnant Hospital Staff

C.-L. Chapple, K. Faulkner, N.W. Marshall and D.J. Rawlings

The recent recommendations of the International Commission on Radiological Protection (ICRP) introduced a supplementary dose limit for the surface of the abdomen of pregnant staff, to restrict the radiation dose to the foetus. This has wide ranging implications on the monitoring of staff in hospitals, some of which are studied here. The relationship between foetal dose, entrance surface dose to the abdomen and personal monitor reading was determined using a anthropomorphic phantom loaded with thermoluminescence dosemeters to record the dose to the uterus, as well as on the surface of the abdomen. Film badges were attached to the phantom at various anatomical positions. This phantom was irradiated for simulations of fluoroscopic examinations in diagnostic radiology and various brachytherapy treatments. The relationships between monitor reading and foetal dose have been derived, and a number of practical monitoring problems for pregnant staff discussed.


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