MDCH - Radiographic or Radiographic-Fluoroscopic Shielding Guidelines

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Radiographic or Radiographic-Fluoroscopic Shielding Guidelines

	High Workload (e.g., rooms in hospitals and in radiology and orthopedic offices)		Moderate Workload (e.g., rooms in medical and chiropractic offices)		Low Workload (e.g., rooms in podiatry and veterinary offices)
	Up to 1000 mA-min/week		Up to 250 mA-min/week		Up to 15 mA-min/week
	Lead (inches)	Concrete (inches)	Lead (inches)	Concrete (inches)	Lead (inches)	Concrete (inches)
Operator Shields	1/16	5	1/16	5	1/16	5

Primary Beams
Walls	3/32 - 1/8	6 - 7	1/16 - 1/8	3 - 6	1/16	3
Floors	3/32 - 1/8	6 - 8	1/16 - 3/32	4 - 6	1/16	4

Secondary Radiation
Walls	1/16	3 - 4	1/32 - 1/16	3	0 - 1/32	1
Doors	1/16	-------	1/32 - 1/16	-------	0 - 1/32	-------
Floors	1/32 - 1/16	2.5 - 3.5	1/32	2.5	0 - 1/32	1
Ceilings	1/32 - 1/16	2.5 - 3.5	1/32	2.5	0 - 1/32	1

updated February 14, 2005

The above concrete thicknesses are based on the use of standard-density concrete with a density of 147 pounds per cubic foot.


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