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British Journal of Radiology (2004) 77, 116-122
© 2004 British Institute of Radiology
doi: 10.1259/bjr/23591655
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Barium enema: use of increased copper filtration to optimize dose and image quality

R E Morrell, MSc, Dip IPEM 1 A T Rogers, MSc, MIPEM 1 J C Jobling, FRCS, FRCR 2 and K E Shakespeare, DCR(R) 2

Departments of 1 Medical Physics and 2 Radiology, Nottingham City Hospital, Hucknall Road, Nottingham NG5 1PB, UK



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  		Figure 1. Distribution of equivalent diameters, for patients.

 


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  		Figure 2. Automatic kV selection for fluoroscopic exposure of a 24 cm polymethyl methacrylate phantom (14 inch field).

 


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  		Figure 3. Automatic kV selection for fluoroscopic exposure of a 24 cm polymethyl methacrylate phantom (10 inch field).

 


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  		Figure 4. Entrance surface dose rate for fluoroscopic exposure of a 24 cm polymethyl methacrylate phantom (14 inch field).

 


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  		Figure 5. Entrance surface dose rate for fluoroscopic exposure of a 24 cm polymethyl methacrylate phantom (10 inch field).

 




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