这些设备用带有正电的白色粒子和负电的黑色粒子的填充微小的胶囊来成像。
These devices use tiny capsules filled with positively charged white particles and negatively charged black ones to make an image.
方法利用已有发射型计算机断层成像技术采集到的图像，提取有用信息并处理得到微型诊疗胶囊在肠道中的运行轨迹。
Methods the medical images collected from emission computed tomography were post-processed to distill the useful information which could be helpful to obtain the motion track of the device.
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