New digital mammograms emit significantly lower doses of radiation the conventional study, especially in women with breast cancer, U.S. researchers said.

A study of 50,000 women, filed Thursday, mammography compared both systems and found that the dose of radiation was 22 percent lower with the digital system with the traditional method.

“Reducing the radiation dose is another step forward in the control of breast cancer with mammograms, which saves thousands of lives every year, “said Dr. Edward Hendrick, of University of Colorado-Denver and a consultant to General Electric.

The study results are part of Digital Mammography Imaging Screening Trial, about 49,528 women in 2005 found that the digital system detects up to 28 percent more tumors than the conventional version in women under 50 menopausal years there and with dense breast tissue.

Dr. Carol Lee, who chairs the Committee on Studies Breast Imaging American College of Radiology, clarified that the previous study had shown that digital results were equivalent or slightly better in certain groups.

What is new is “to be obtained with a dose of lower radiation.

Both systems generate X-ray breast imaging, but digital mammography is stored in a computer, which easier to access compared with mammography traditional.

Lee said that in general, the radiation dose in both systems is not so high and that women should not skip The study recommended if there is a digital system where live.

But he said that in general it is better to reduce the dose of radiation. “We want to keep it as low as possible and achieve the target, which is get a good picture, “Lee said in a telephone interview.

In the study, researchers used equipment Fischer Imaging Corp Digital, Fujifilm Medical Systems, GE Healthcare and Hologic Inc.

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