Betty Daniel, right, of Chicago, gets her routine yearly mammogram from Lead Mammography Tech Stella Palmer at Mt. Sinai Hospital in Chicago, February 15, 2012.

Heather Charles—Chicago Tribune/MCT/Getty Images

Betty Daniel, right, of Chicago, gets her routine yearly mammogram from Lead Mammography Tech Stella Palmer at Mt. Sinai Hospital in Chicago, February 15, 2012.

Betty Daniel, right, of Chicago, gets her routine yearly mammogram from Lead Mammography Tech Stella Palmer at Mt. Sinai Hospital in Chicago, February 15, 2012.

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