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"It looks like computer-aided detection might not be working like people thought it would," said lead researcher Dr

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A study published Wednesday in the New England Journal of Medicine found that when computers were used to help read mammograms, doctors ordered biopsies much more often, a 20 percent increase, reports CBS News medical correspondent Jon LaPook. But there was no improvement in cancer detection.

"It looks like computer-aided detection might not be working like people thought it would," said lead researcher Dr. Joshua Fenton, a family doctor at the University of California, Davis.

Known as computer-aided detection or CAD, it consists of a computer coupled with software that identifies suspicious spots on mammograms and visibly marks them.

Here's how it works. When mammograms are taken, radiologists first read the X-rays and make their own judgments. But they can then double-check with the computer system to make sure they have missed anything that's worth examining further. There usually isn't.

Computer-assisted mammography has been rapidly adopted since it was approved by the FDA in 1998, adds LaPook. But critics say it is no replacement for the trained eye.

"Our society, I think, puts a lot of weight on technology and we have a lot of hope in the promise of technology and perhaps our study highlights the importance of the human component of clinical medicine," said Dr. Joann Elmore of Harbor View Medical Center.

The researchers in this five-year study, backed by the federal government and the American Cancer Society, analyzed mammograms from medical centers in Washington state, Colorado and New Hampshire. Seven of 43 centers used CAD. The mammograms came from 222,135 women and included 2,351 who had a cancer diagnosis within a year of their tests.

The researchers found that with computerized mammography, a third more women were called back for suspicious findings and 20 percent more got biopsies than with ordinary mammograms. That might be a good thing, if enough cancers turned up to justify the minor surgeries and anxiety surrounding them.

Yet the computerized method showed no clear capability to turn up more cancer cases than unaided readings: Four cancers were found for 고흥출장안마 every 1,000 mammograms, no matter what screening method was used. That means that CAD would give 156 more unneeded callbacks and 14 more biopsies for every additional cancer it finds. And though these extra cancers tend to be early ones that are easier to treat, many would never be threatening anyway.

Dr. Phil Evans, at the University of Texas Southwestern Medical Center, said that "most radiologists that use computer-aided mammograms understand there are many false positives."

Frustratingly, the study ultimately wasn't big enough to reach fully reliable comparisons between the rates of cancers found by the two methods. That means that bigger studies are needed to clarify whether computerized mammography finds enough additional cancers to make it worth all those false alarms and added cost. While the technology adds just $20 or so to a single mammogram, a CAD unit might cost $50,000 to $75,000.

Even so, Dr. Jay Baker, a Duke University radiologist who has studied the technology, said: "I don't think it's a huge stop sign to using CAD."

"CAD won't go away; it will have a place," agreed Dr. Ferris Hall, a mammogram specialist at Beth Israel Deaconess Medical Center, in Boston, who wrote an accompanying editorial. But he added, "This is a setback for it."

Whether computerized or not, periodic mammograms are recommended for healthy women every year or two once they reach age 40. Experts advise women to check the credentials of radiologists at the clinic they plan to use and look for places that do a high volume.
asked 2 days ago by BernardoWesc (120 points)

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நியூ இரா சிட்டி கேள்வி மற்றும் பதில் வலைதலத் திற்கு வரவேற்கிறோம். , நீங்கள் உங்கள் கேள்விகளுக்கு மற்ற சமூக உறுப்பினர்களின் மூலமாக பதில்களை பெற முடியும். எவர் ஒருவர் 100 கேள்விகள் அல்லது 100 பதில்கள் கொடுக்கிறார்களோ அவர்கள் லங்காவி - மலேசியாவில் நடைபெறும் "ஐ 2 ஐ" பயிற்சி பட்டறையில் இலவசமாக*** கலந்து கொள்ள தகுதிபெறுகிறார்கள். "ஐ 2 ஐ" பயிற்சி பட்டறை மே - 2017 இல் நடைபெற உள்ளது. கேட்கப்படும் அல்லது பதிலளிக்கும் ஒவ்வொரு கேள்விக்கும் 40 மதிப்பெண்கள் வழங்கப்படும். முதலில் 4000 மதிப்பெண்கள் எடுக்கும் நபர் இலவசமாக*** "ஐ 2ஐ" பயிற்சி பட்டறையில் கலந்துகொள்ள வாய்ப்பு அளிக்கப்படும். நீங்கள் புள்ளிகள் பெற கேள்விகள் குறைந்தபட்சம் 160 வார்த்தைகள் மற்றும் 600 வார்த்தைகளுக்கு மிகாமல் . இருக்கவேண்டும். உங்கள் கேள்விகளுக்கு 7 நாட்களுக்குள் பதில் அளிக்கவில்லை என்றல், கேள்வி வலைத்தளத்தில் இருந்து நீக்கப்படும். *** இது ஒரு சில நிபந்தனைகளுக்கு உட்பட்டது
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