Fig 1.

Stanford pulmonary laboratory system layout diagram. The large size of image datasets and data storage requirements for analysis results required a high-capacity, high-bandwidth infrastructure. The Stanford Pulmonary Laboratory has been set up to allow multiple users to simultaneously analyze scans. Scans are pushed from the institutional PACS system through a secure passthrough on the laboratory firewall and are then processed, registered, and stored on a central server with a 1 TB RAID array and gigabit Ethernet. All intermediate data and analysis results are also stored on this secure server with redundant external hard-drive backup. Currently, three analysis workstations are connected to the central server. In addition, one external Web passthrough server is used for external web and ftp services to study collaborators. This allows the internal laboratory computers to be isolated from institutional and external security threats.