 Wysłany: Śro 5:45, 02 Mar 2011 Temat postu: |
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| 一种刚刚问世的X光机却能全方位呈现内脏器官的立体影像，而且辐射大大减少，被认为是医学技术的一大突破。 心脏X光立体图腿腹部X光立体图头部X光立体图传统X光扫描只能看到平面人体图像，但一种刚刚问世的X光机却能全方位呈现内脏器官的立体影像，而且辐射大大减少，被认为是医学技术的一大突破。这台命名为“光辉”（Brilliance）的X光机是在26日芝加哥举行的北美放射学会的年会上亮相的。据研发这款机器的飞利浦公司介绍，它发射出的X光能穿进人体内扫出影像，速度比此前最快的机器提高了22%，每0.3秒放射256次脉冲，两次心跳的时间就能把心脏拍得点滴不漏，1分钟内就可为患者做全身扫描。通过环绕拍摄获得的大量多角度图片被输入计算机，经过合成就形成了三维立体图。医生可以操作这台机器，从不同角度观看它拍摄出的高清内脏图像，以更加准确地诊断疾病，尤其是在做心脏检查或寻找细小的恶性肿瘤的时候。此外，由于这款X光机速度大大提高，每次放射仅需千分之几秒，因此患者在接受检查时受到的辐射量将减少80%。这一点更是让消费者感到格外兴奋。Many years ago there lived an Emperor who was so exceedingly fond of fine new clothes that he spent vast sums of money on dress. To him clothes meant more than anything else in the world. He took no interes
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| Wysłany: Wto 10:31, 01 Mar 2011 Temat postu: who said he wouldn't marry me |
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