Those include the PillCam, a small pill-sized wireless camera that takes photos as it goes through the digestie tract, and Brao capsule, another wireless system that detects esophageal acids.

• 那些包括PillCam，一种小药丸式大小的无线照相机，当其通过消化道时可摄片；Brao胶囊，另外一种无线系统，其可检测食管酸。