Insights into Imaging

Table 4 Conversions of old quantities into ‘kerma in air’ or ‘absorbed dose’^a

From: The skin dose of pelvic radiographs since 1896

	Unit	Kerma in air [Gy]	Absorbed dose [Gy]
Exposure	r	0.00876
Exposure	R	0.00934
Absorbed dose	rad		0.01
Dose equivalent	rem		0.01

^aRelations hold for diagnostic X-rays and, in case of exposure and kerma, for equilibrium of charged particles. For more details see [56] or [57]

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