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. Author manuscript; available in PMC: 2010 Mar 21.

Published in final edited form as: Phys Med Biol. 2009 Feb 19;54(6):1533–1553. doi: 10.1088/0031-9155/54/6/009

The mean estimated and measured image contrast of different structures in the phantom as a function of tube voltage (a) 100% glandular tissue; (b) 30:70 glandular/adipose; (c) 70:30 glandular/adipose; (d) 100% adipose tissue. The error bars indicate the range in the image contrast, as three image contrast readings were taken at each setting.

The mean estimated and measured image contrast of different structures in the phantom as a function of tube voltage (a) 100% glandular tissue; (b) 30:70 glandular/adipose; (c) 70:30 glandular/adipose; (d) 100% adipose tissue. The error bars indicate the range in the image contrast, as three image contrast readings were taken at each setting.