现在医生们有一个可以大范围地监察小肠的器具。最近批准的可与传统的内窥镜共同使用的M2A是一种可吞咽的无线影像胶囊。
Picture Snapping1) Pill
Physicians perform more than two million endoscopies2) a year on the small intestine3),looking for cancers and other ailments4) by inserting fiber-optic5) tubes via the throat or rectum6).This often requires sedation7),can be uncomfortable,and some areas remain inaccessible.But now doctors have a tool that can see more of the small intestine.The M2A ――recently approved for use along with traditional endoscopes ――is a wireless video capsule that’s swallowed.It maps the intestine as you go about your business.The M2Asanps two pictures a second for eight hours as it passes through a patient’s system,beaming images to a small recorder worn at the waist.These images are then downloaded to a computer for doctors to analyze.The capsules won’t banish the endoscope,however doctors believe that the M2A is an important diagnostic8) advance.