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American football and international hockey have gotten hammered for their brutal hits, which can lead to serious brain injury. But soccer players are also getting their heads examined.?
橄
欖球和曲棍球因?yàn)樗麄円靶U的撞擊而受到排斥，這些撞擊可以導(dǎo)致嚴(yán)重的大腦損傷。但是這些運(yùn)動(dòng)員也接受腦部的檢查。?

A new study used diffusion tensor imaging, a kind of MRI that can pick up on changes to nerve connections, to look for signs of injury in soccer players who head the ball—a lot.
?一項(xiàng)利用擴(kuò)散張量造影的核磁共振技術(shù)（收集神經(jīng)信號(hào)變化），被用來(lái)尋找那些使用頭球的運(yùn)動(dòng)員腦部手上的位點(diǎn)。?

"The suspicion, concern and the indications of our findings are that changes to the brain similar to what happens when someone has actual head trauma occur in the brain of someone due to heading," Michael Lipton of the Albert Einstein College of Medicine. The results were presented at the Radiological Society of North America's Annual Meeting.
?“質(zhì)疑、憂慮和研究結(jié)果顯示出來(lái)的跡象都在改變與曾經(jīng)受過(guò)創(chuàng)傷的大腦相似的因?yàn)轭^球所致創(chuàng)傷的大腦”，艾伯特愛(ài)因斯坦醫(yī)學(xué)院的Michael Lipton這么說(shuō)。這個(gè)結(jié)果被揭示在北美放射學(xué)聯(lián)合的年會(huì)上。

An occasional heading of a soccer ball isn't likely to be a problem—the ball isn't hard enough to directly injure nerve fibers in most cases. But frequent heading might be causing other harm that leads to a deterioration of crucial connections. The researchers found that the changes came in players averaging 1,000 to 1,500 head hits a year. The advice to them: wise up—use your foot.
足球給頭部偶然的撞擊也許不是什么問(wèn)題，因?yàn)樵诖蠖鄶?shù)案例中球沒(méi)有足夠硬到能夠給神經(jīng)纖維造成直接的傷害。但是頻繁的撞擊也許會(huì)造成其他傷害，并且導(dǎo)致嚴(yán)重的神經(jīng)連接損傷。科學(xué)家們發(fā)現(xiàn)平均每年1000到1500次頭部的撞擊可能會(huì)導(dǎo)致這種情況的發(fā)生。因此，給這些人的建議是：用腳做個(gè)聰明人。?

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