ABSTRACT
Fluorescent image of human mucous can display a special color to demonstrate a cancer at its early stage. This will provide a novel method for early diagnose of the Pathological Changes. This research firstly extracted the color characteristics of the clinic images and then calculated all RGB components in different local areas. Finally, a stability analysis was performed. On the above basis we showed a conclusion that G/R can be used as a judge index for pathologic changes.
Subject(s)
Female , Humans , Diagnostic Imaging , Methods , Fluorescence , Image Enhancement , Methods , Image Processing, Computer-Assisted , Uterine Cervical Neoplasms , DiagnosisABSTRACT
Localization system was designed based on analytic equation of permanent magnetic field to localize the swallowing electrical capsule in the gastrointestinal. Algorithm was presented and experiment was made. Two three-axis magnetism sensors were mounted in the capsule. The non linear equations set of sensor's output and capsule's position and attitude was created according to space position and attitude relationship model. The equations set was resolved with numerical method. Comparison between the calculation value and expected value showed that this method was feasible.
Subject(s)
Humans , Algorithms , Biosensing Techniques , Capsules , Electromagnetic Fields , Electrons , Gastrointestinal Diseases , Diagnosis , Gastrointestinal TractABSTRACT
For diagnosing the colon's pathologies micro-invasively or non-invasively actively, an autonomous prototype of the earthworm-like robot for colonoscopy was designed according with the principle of the bionics and manufactured using precision process technology. In-Vitro experiments in pig colon were made. This micro robot for colonoscopy was drove directly by elecmagnetic linear driver. The mobile cells were joined with two degree-of-freedom joints and the whole body was flexible. The direction of movement and the angle of imaging can be controlled by the shape memory alloy (SMA). In experiments, locomotion efficient was analyzed carefully. In-vitro experiments in pig colon demonstrated that the micro robot can navigate though the colon by itself reliably and freely, which was useful to the application of robot for colonoscopy in the clinic.
