October 24, 2016 — A recent study published in the American Journal of Roentgenology shows that early signs of breast cancer can be more easily detected when comparisons to prior mammograms are available. Comparing a current scan with a prior study enables radiologists to identify important changes that can indicate an irregularity, since what is normal varies on a patient-by-patient basis.
The only way, however, that prior comparisons can be made is if previous imaging studies are readily available to the physician at the time of diagnosis. Enabling cloud access to mammograms ensures that these comparison images are available wherever and whenever they are needed, thus allowing for earlier detection of breast cancer in patients, according to Purview.
Screening-detected breast cancers are curable 96-99 percent of the time and often require less invasive therapies. With the availability of prior comparison mammograms, the accuracy of detection improves as do the resulting outcomes. False-positives are significantly decreased when previous examinations are available for comparison. Diagnostic mammography comparisons also increase true-positive findings, thereby detecting cancer more accurately.
Experts estimate that when prior mammograms are available at the point of screening, additional recall exams will be reduced 40-60 percent and breast cancers will be detected 25 percent earlier – leading to better outcomes and reduced cost of examination and treatment.
For many, mammography screening guidelines can seem contradictory and confusing. The recommended frequency for mammography scanning is changing. Competing assessments by the U.S. Preventive Services Task Force (USPSTF) and American Cancer Society (ACS) both weigh the harms of false positives, unnecessary biopsies and other costs against the Society of Breast Imaging’s (SBI) recommendation of annual mammograms beginning at age 40.
Assuming nothing changes, after 2017, the Centers for Medicare and Medicaid Services (CMS) will follow the USPSTF guidelines that will have the effect of delaying the starting age to 50 and reducing the frequency of mammograms to every other year. If these new rationed screening protocols are in fact adopted, it will be even more critical to ensure that women have easy access to prior mammograms.
To ensure optimal outcomes, especially if the new metered access to breast imaging comes into effect, facilities should offer women shareable cloud access to mammograms. With the introduction of electronic health records, patients are beginning to demand more and more access to their medical information. And who can blame them? Because as the studies show, understanding your past can help you control your future.
For more information: www.purview.net
March 13, 2026 
