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VOA慢速英语(翻译+字幕+讲解):3D技术可拯救生命

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From VOA Learning English, this is the Health Report.

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Three-dimensional technology -- known as three-D -- gives depth to objects that would otherwise appear two-dimensional, or flat. Three-D makes movies and video games look more realistic. And now it could help save lives.

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For years, mammograms have played an important role in finding breast cancer. But these X-ray pictures of the human breast often miss dangerous lumps or tumors.

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And they also produce false positives. A false positive wrongly appears to show suspicious tissue. And that causes painful, unnecessary biopsies to examine that tissue.

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A new study shows that three-D technology could change the way doctors look for breast cancer.

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A woman undergoes a mammography exam, a special type of X-ray of the breasts used to detect tumors.
When Zulima Palacio discovered she had breast cancer, it already had reached stage three. That means that the cancer was very dangerous.

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"Even a month before it was detected, I went for a sonogram and they told me, 'You're fine, go home.'"

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Ms. Palacio is now cancer free. But the standard two-dimensional mammogram missed all three of her tumors.

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Many doctors - including cancer surgeon Negar Golesorkhi - say standard mammography does not find enough cancerous tumors. She says looking for cancer in dense, thick breast tissue is like looking for a polar bear in a snow storm. In other words, it is very difficult.

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"When we look for cancer on a mammogram in a dense breast tissue, we're looking for a polar bear in a snow storm, so it would be very difficult to find."

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A few years ago, the U.S. Food and Drug Administration approved the use of three-D mammography. And three-D technology found Jennifer Hoeft's tumor.

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"It was a very small tumor. It was only an 8 millimeter tumor that couldn't be felt."

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Sarah Friedewald is a doctor at Lutheran General Hospital in the U.S. state of Illinois. She led a study to compare the results of three-D and two-D mammography from nearly a half million patients.

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Dr. Friedewald says they found more cancers using three-D mammograms versus, or compared to, two-D mammograms. And they found more cancers that kill.

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"We found invasive cancers or the cancers that we worry about, the ones that could potentially kill people more frequently in women who had the 3-D mammogram versus the women who just had the 2-D mammogram."

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The White House in Washington is bathed in pink light to celebrate Breast Cancer Awareness Month.
Dr. Friedewald says tumors that are difficult to see on a standard mammogram are easy to find in 3 dimensions.

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Jennifer Hoeft is grateful that she had three-D mammography.

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"I truly, truly believe that the 3-D mammography is what caught my cancer early and is allowing me to pretty much live my life the way I want to."

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And from VOA Learning English, that's the Health Report. I'm Anna Matteo.

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文本来自51voa,译文属可可原创,仅供学习交流使用,未经许可请勿转载

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重点单词   查看全部解释    
archive ['ɑ:kaiv]

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n. 档案,档案馆 vt. 存档

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bulk [bʌlk]

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n. 体积,容积,大批,大块,大部分
vt.

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effective [i'fektiv]

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adj. 有效的,有影响的

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administration [əd.mini'streiʃən]

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n. 行政,管理,行政部门

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physician [fi'ziʃən]

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n. 内科医生

 
invasive [in'veisiv]

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adj. 侵略性的;攻击性的

 
suspicious [səs'piʃəs]

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adj. 可疑的,多疑的

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addition [ə'diʃən]

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n. 增加,附加物,加法

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celebrate ['selibreit]

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v. 庆祝,庆贺,颂扬

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grateful ['greitfəl]

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