The overwhelming majority of medical X-ray systems provided in emerging markets are still film-based, incurring very high operating costs and yielding poor image quality. Modern digital X-ray systems are not spread in these countries due to their high complexity and fragility, but also because their X-ray detectors are not working properly at high temperatures. This project aims to develop a medical x-ray detector able to provide high-quality images in very harsh environments. This detector combines state-of-the-art CMOS APS sensors in a novel hardware architecture for real-time image processing.