PETRA: A web-based system supporting computer aided diagnosis of alzheimer's disease

This paper presents PETRA, a Web-based system to assist practitioners in the diagnosis of Alzheimer's Disease (AD). Particularly, it provides with online tools to carry out multiple advanced analysis on T1 Magnetic Resonance Images (MRI) and Positron Emission Tomographies (PET). The key innovation behind PETRA is that it enables anywhere, anytime access to advanced neuroimaging tools, which previously required specialized machines with high computational resources. Specifically, PETRA allows to automatically segment tissue, white matter, grey matter and cerebro-spinal fluid; to visualize, manipulate and compare MRIs, PETs and already-segmented neuroimages; to manage large sets of images in a simple manner; and to perform an automatized pre-diagnosis through the application of different classification techniques.