Featured Research

from universities, journals, and other organizations

Computer-aided detection does not improve mammogram accuracy, study suggests

Date:
July 28, 2011
Source:
Journal of the National Cancer Institute
Summary:
Using computer-aided detection software to help analyze and interpret mammograms does not improve accuracy, according to a new study.

Using computer-aided detection (CAD) software to help analyze and interpret mammograms does not improve accuracy, according to a study published online July 27 in the Journal of the National Cancer Institute.

CAD software, used currently for analyzing three out of four mammograms in the United States, identifies patterns associated with breast cancers and marks potential abnormalities for the radiologist to consider before making a final recommendation.

To learn whether CAD leads to more accurate reading of mammograms, Joshua J. Fenton, M.D., at the University of California, Davis, and colleagues analyzed data from more than 1.6 million film screening mammograms carried out at facilities in seven states from 1998 to 2006. The facilities participate in the Breast Cancer Surveillance Consortium, a federally supported network in which data quality is rigorously monitored.

Of 90 total facilities, 25 adopted CAD and used it for an average of 27.5 months during the study period. The researchers collected information on women who had mammograms with and without CAD, including whether they were diagnosed with breast cancer within a year of the screening.

According to the study, CAD was associated with more false positives -- identifications of tumors that turned out to be false. It did not improve detection of invasive cancers. Moreover, the cancers detected using CAD were no more likely to be smaller or at a lower stage or to have less lymph node involvement than those detected without CAD. The results were the same after adjusting for patient age, breast density, use of hormone replacement therapy, and other factors that might influence mammography findings.

The authors point out that CAD costs Medicare more than $30 million a year. "As currently implemented in U.S. practice," they write, CAD appears to increase a woman's risk of being recalled for further testing after screening mammography while yielding equivocal health benefit."

In an accompanying editorial, Donald Berry, Ph.D., of the M.D. Anderson Cancer Center in Houston argues that any benefit to CAD is likely to be so small that it would be difficult to detect even in a very large randomized study. Moreover, improving the sensitivity of CAD might find less aggressive tumors or those that would otherwise show up between mammograms. Early detection of such tumors, he writes, is not likely to have much of an impact on breast cancer mortality.

The editorialist concludes that researchers should work to make CAD software more useful, but that "this should happen in an experimental setting and not while exposing millions of women to a technology that may be more harmful than it is beneficial."


Story Source:

The above story is based on materials provided by Journal of the National Cancer Institute. Note: Materials may be edited for content and length.


Journal Reference:

  1. Donald A. Berry. Computer-Assisted Detection and Screening Mammography: Where’s the Beef? J Natl Cancer Inst, July 27, 2011 DOI: 10.1093/jnci/djr267

Cite This Page:

Journal of the National Cancer Institute. "Computer-aided detection does not improve mammogram accuracy, study suggests." ScienceDaily. ScienceDaily, 28 July 2011. <www.sciencedaily.com/releases/2011/07/110727161248.htm>.
Journal of the National Cancer Institute. (2011, July 28). Computer-aided detection does not improve mammogram accuracy, study suggests. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2011/07/110727161248.htm
Journal of the National Cancer Institute. "Computer-aided detection does not improve mammogram accuracy, study suggests." ScienceDaily. www.sciencedaily.com/releases/2011/07/110727161248.htm (accessed July 29, 2014).

Share This




More Health & Medicine News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Ebola Virus Threatens West Africa

Deadly Ebola Virus Threatens West Africa

AP (July 28, 2014) West African nations and international health organizations are working to contain the largest Ebola outbreak in history. It's one of the deadliest diseases known to man, but the CDC says it's unlikely to spread in the U.S. (July 28) Video provided by AP
Powered by NewsLook.com
$15B Deal on Vets' Health Care Reached

$15B Deal on Vets' Health Care Reached

AP (July 28, 2014) A bipartisan deal to improve veterans health care would authorize at least $15 billion in emergency spending to fix a veterans program scandalized by long patient wait times and falsified records. (July 28) Video provided by AP
Powered by NewsLook.com
Two Americans Contract Ebola in Liberia

Two Americans Contract Ebola in Liberia

Reuters - US Online Video (July 28, 2014) Two American aid workers in Liberia test positive for Ebola while working to combat the deadliest outbreak of the virus ever. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins