Khan Alimul Haque, Sohag Md Hanif Ali, Vedaei Seyed Shahim, Mohebbian Mohammad Reza, Wahid Khan A
Annu Int Conf IEEE Eng Med Biol Soc. 2020 Jul;2020:4345-4348. doi: 10.1109/EMBC44109.2020.9176340.
Wireless capsule endoscopy (WCE) has been an effective and safe way to diagnose gastrointestinal (GI) disorders, such as, colon cancers, polyps and bleeding. The detection of bleeding and other anomalies is currently determined through conventional visual inspection of the WCE images by the physicians. An on-chip bleeding sensor is thus required, that can perform an automatic prescreening of the bleeding areas in real-time using blood's optical properties to assist the diagnosis. In this study, a spectrophotometer was initially used to evaluate the chromatic properties of blood. It is found that the reflection ratio pairs of 700 nm to 630 nm and 480 nm to 530 nm provide important statistics to separate blood from non-blood samples. It has been implemented hardware using small LEDs and photodiodes to validate the results. Therefore, the proposed sensor system works as a good candidate to be integrated in a WCE device to detect GI bleeding quickly and in real-time.
无线胶囊内镜（WCE）一直是诊断胃肠道（GI）疾病（如结肠癌、息肉和出血）的一种有效且安全的方法。目前，出血和其他异常情况的检测是通过医生对WCE图像进行传统的目视检查来确定的。因此，需要一种片上出血传感器，它可以利用血液的光学特性实时自动预筛选出血区域，以辅助诊断。在本研究中，最初使用分光光度计来评估血液的色度特性。研究发现，700纳米至630纳米以及480纳米至530纳米的反射率对为区分血液和非血液样本提供了重要数据。已使用小型发光二极管（LED）和光电二极管进行了硬件实现，以验证结果。因此，所提出的传感器系统有望很好地集成到WCE设备中，以快速实时检测胃肠道出血。
