體重超標(biāo)的人群，除了會產(chǎn)生一系列危及健康的危險之外，還會在他們接受影像學(xué)檢查時降低了正確診斷的機(jī)會。

一項(xiàng)最新研究的研究人員報道說：肥胖能夠降低影像掃描的準(zhǔn)確性以及檢查的性能，包括核磁共振與計(jì)算機(jī)斷層掃描檢查的形態(tài)。在過去十年里，肥胖患者進(jìn)行影像學(xué)檢查時候遇到的困難從0.10％～0.19％增加了一倍，而肥胖人數(shù)從9％～16％也增加了一倍。

研究人員將這個困難歸結(jié)于：超聲波檢查必須穿透身體組織以獲得精確影像，而對體重超標(biāo)的人群就變得更加困難。因此研究人員指出：制造商應(yīng)當(dāng)改進(jìn)設(shè)計(jì)以及研發(fā)新技術(shù)，以便在體重超標(biāo)人群中獲得更好的影像檢查結(jié)果。

馬薩諸塞州總醫(yī)院(Boston, MA, USA)的研究人員在芝加哥舉行的北美放射學(xué)會2004年年會上報道了這項(xiàng)結(jié)果。
 
Obesity May Influence Imaging Diagnosis
 
Overweight individuals, in addition to being at risk for a host of health problems, may also be reducing their chances of being correctly diagnosed during imaging procedures.

Researchers, according to a new study, report that obesity can restrict the accuracy and ability of imaging scanning, including such modalities as magnetic resonance imaging (MRI) and computed tomography (CT). The number of difficulties with imaging obese individuals almost doubled from 0.10-0.19% in the past decade, which compares with the increase in overweight statistics that have nearly doubled from 9-16%.

The investigators attribute this problem to the fact that ultrasound waves must penetrate through the body tissue to generate an accurate image reading, and this becomes more difficult with heavier individuals. Therefore, the investigators stated that manufacturers need to think about design changes and technologic developments to obtain better imaging in larger patients.

The researchers, from Massachusetts General Hospital (Boston, MA, USA), presented their results at the 2004 annual meeting of the Radiological Society of North America (RSNA), held in Chicago, IL, USA.