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  3. The same benefits and drawbacks are found when using CT scanning to detect lung cancer — the three-dimensional imaging, improve

The same benefits and drawbacks are found when using CT scanning to detect lung cancer — the three-dimensional imaging, improve

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问题     The same benefits and drawbacks are found when using CT scanning to detect lung cancer — the three-dimensional imaging, improve detection of disease but creates hundreds of images that increase a radiologist’s workload, which,【C1】________ , can result in missed positive scans.
    Researchers at University of Chicago Pritizker School of Medicine presented【C2】________ data on a CAD (computer-aided diagnosis) program they’ve designed that helps radiologist spot lung cancer【C3】________ CT scanning. Their study was【C4】________ by the NIH and the university.
    In the study, CAD was applied to 32 low-dose CT scanning with a total of 50 lung nodules, 38 of which were biopsy-confirmed lung cancer that were not found during initial clinical exam.【C5】________ the 38 missed cancers, 15 were the result of interpretation error (identifying an image but【C6】________ it as non cancerous) and 23【C7】________ observational error ( not identifying the cancerous image).
    CAD found 32 of the 38 previously missed cancers (84% sensitivity), with false-positive【C8】________ of 1.6 per section.
    Although CAD improved detection of lung cancer, it won’t replace radiologists, said Sgmuel G. Armato, PhD, lead author of the study. "The computer is not perfect," Armato said. "It will miss some cancers and call some things cancer that【C9】________ . The radiologists can identify normal anatomy that the computer may【C10】________ something suspicious. It’s a spell-checker of sorts, or a second opinion.
【C8】
选项 A、mortalities
B、incidences
C、images
D、rates
答案D
解析 本题考查名词辨析。本句的大意为CAD在38个以前错过的癌症中发现了32个(84%的敏感性)，假阳性率为每节1．6个。表示“概率”。
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