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August 30, 2010

Nuclear-Based Breast Imaging Exams Increase Cancer Risk

Nuclear-based breast imaging exams such as single breast-specific gamma imaging (BSGI) or positron emission mammography (PEM) may increase a woman's risk of developing radiation-induced cancer, according to a report published in medical journal Radiology. BSGI and PEM both invol

By cms admin

Nuclear-based breast imaging exams such as single breast-specific gamma imaging (BSGI) or positron emission mammography (PEM) may increase a woman’s risk of developing radiation-induced cancer, according to a report published in medical journal Radiology.

BSGI and PEM both involve te injection of radioactive material and have been approved by the US Food and Drug Administration (FDA) as alternatives to mammography.

According to the study, two-view digital mammography and screen-film mammography had an average lifetime risk of fatal breast cancer of 1.3 and 1.7 cases respectively, per 100,000 women aged 40 years at the time of exposure.

Breast computer tomography and digital tomosynthesis had an average lifetime risk of fatal breast cancer of 1.3 to 2.6 cases respectively, per 100,000 women aged 40 years at the time of exposure.

A single BSGI exam had a lifetime risk of fatal cancer 20 to 30 times than that of digital mammography, and the risk of single PEM exam was 23 times greater than that of digital mammography, in women aged 40 at the time of exposure.

Study author R Edward Hendrick said that the primary tool for breast cancer screening is still mammography, which has a very low radiation dose and a very low lifetime risk of cancer induction.

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