Figure 1.

The flow of information for study setup and data collection using CARAT. The currently usable databases are the FBIRN human imaging database (HID) and the MRN medical imaging computer information system (MICIS), but others can be modeled in the web service. The study definition portion determines which CRFs are required in what layout for which visits and subject types within the study. The CRF XML layout captures how the questions should be presented on the tablet and the validation steps required. Following the administration of the assessments, the subject’s responses are sent via the web service back to the available database.