Development of a DOI Equipment Using MR Radiation for Skin Lesions Diagnosis and Blood Vessels Recognition

摘要

Diffuse Optical Imaging (DOI) is a noninvasive technique that uses diffuse light in the spectral region of the visible and near infrared to measure the optical properties of biomedical tissues. The technique depends on the studied object, generally being a tissue with low absorption capacity in the NIR light; the technique is commonly applied in soft tissues such as tissues of breasts and brain. DOI has recently moved from being a theoretical model to a popular instrumentation in clinics and hospitals. This article aims to create an equipment of a diffuse optical imaging system by illumination in the near infrared spectral region, which could validate the diagnosis of pathologies in human skin and work as a vein viewer device. The prototype uses 850 nm (LED) arranged in a ring-shaped aluminum structure, with an ergonomic handle and a coupled CCD camera, whose capture radiation spectrum goes from visible to NIR. The system was designed in CAD 3D and plastic parts were 3D printed. Images were processed using several plugins of imageJ and OpenCV libraries.