Some argued that mammograms were causing an increase in breast cancer.

很多人认为钼靶是导致乳腺癌发病增加的原因。

But Prof Evans says: ‘A third of breast cancers are picked up in the three years between mammograms.’

但埃文教授说：“三分之一的乳腺癌都是在三年一次检查间隔期间发现的。”

Also, crucially, it can explain to a radiologist how it reached its decision by showing him similar mammograms in the database.

更为可贵的是，它可以通过指出在数据库中的相似图像，来为放射科医生提供诊断依据。

Mr Barr admits that screening, which was introduced in 1988, could be improved but women should not be put off having mammograms.

乳腺癌筛检始用于1988年，巴尔先生承认该技术可能还要进一步完善，但女性不应拖延进行X射线胸检。

Housewives and also those of a lower education were more aware about mammograms than working women, the survey of 1,012 women found.

调查访问了1012名女性，发现家庭主妇和低学历女性较在职女性更认识X光造影检查。

She suspects that by using only the most informative mammograms, it might be possible to keep the size of the database within reasonable limits.

她提出只使用最有价值的X光片光，会有可能将数据库的规模控制在允许的范围内。

However, most breast cancers have been present for 6 to 8 years by the time they appear on mammograms, and screening misses up to 20% of all tumors.

但是，通过X光检查确诊的大多数乳腺癌患者，一般患病时间都长达6 - 8年，而该检查对肿瘤的漏诊率高达20%。

Lastly two-dimensional entropic thresholding was applied to segmentation image, thus microcalcifications were detected and were marked in mammograms.

最后利用二维最大熵阈值分割对图像二值化，从而检测出微钙化点并在图像上标识出来。

Fact: Mammograms offer our best means of early detection-current guidelines still recommend them annually for women 40 and older-but they're not perfect.

事实：X光检查是乳腺癌早期发现的最佳方式，但仍是不完美的，目前的建议仍然是40岁以上的妇女每年检查一次。

Also, women today receive 50 times less radiation from mammograms than they did 20 years ago, with the risk of long-term health effects being almost zero, according to the FDA.

据FDA称，如今妇女照x光时的辐射量较之20年前，已经降低了50倍，对身体长期的影响几乎为零。

Instead of relying on feature extraction, Dr Tourassi's technique works by comparing the images taken by a radiologist with a large collection of normal and abnormal mammograms held in a database.

并不依赖于特征穷举法，Tourassi博士的技术，是把放射科医生拍下来的X光片放入，储存着大量正常与不正常图片的数据库中加以比较。