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中文摘要：
为了检测胃肠（GI）道疾病，设计并研制了一种新型的基于JPEG格式的数字式无线胶囊内窥镜（WCE）系统。胶囊内窥镜的直径为12mm，长28mm，非常易于吞服。胶囊内窥镜在人体肠道的蠕动作用下顺着消化道向下运动，同时获得分辨率为320×240的内窥镜图像，图像被压缩为JPEG格式后直接采用数字信号无线传出体外，无需进行D／A转换。数据被体外的接收盒接收存储，然后由图像分析软件进行再现、分析、诊断等处理。在用猪小肠模拟人体肠道的离体实验中，该胶囊内窥镜系统清晰地再现了猪小肠内部的图像。与基于Bayer格式模拟信号的胶囊内窥镜相比，数字信号抗干扰能力强，图像更加清晰，将有助于提高临床胃肠道疾病的诊断率。
英文摘要：
For diagnosis of gastrointestinal （GI） tract diseases, the authors designed and developed a novel type of JPEG-based wireless capsule endoscopy （WCE） system. This wireless capsule endoscope is 12mm in diameter and 28mm in length, which is small enough to be easily swallowed. After being swallowed, the capsule endoscope travels down through the GI tract and has the abilities to take WCE images with the resolution of 320×240, compress them into JPEG form, and transmit digitally the compressed images outside of the patient＇ s body, without D/A signal transformation. The images are received and stored by the receiving box, and shown by the software application. In the vitro experiments, the WCE produced clear digital JPEG images of the pig small intestine. Because of the strong anti-interference ability, the digital JPEG images are clearer than the Bayer images and will help to improve the diagnoses of GI tract diseases.
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