title: 1995 Joseph E. Whitley, MD, Award. A World Wide Web gateway to the radiologic learning file.
abstract: OBJECTIVE
  Computer networks in general, and the Internet specifically, are changing the way information is manipulated in the world at large and in radiology. The goal of this project was to develop a computer system in which images from the Radiologic Learning File, available previously only via a single-user laser disc, are made available over a generic, high-availability computer network to many potential users simultaneously.
  
  
  METHODS
  Using a networked workstation in our laboratory and freely available distributed hypertext software, we established a World Wide Web (WWW) information server for radiology. Images from the Radiologic Learning File are requested through the WWW client software, digitized from a single laser disc containing the entire teaching file and then transmitted over the network to the client. The text accompanying each image is incorporated into the transmitted document.
  
  
  RESULTS
  The Radiologic Learning File is now on-line, and requests to view the cases result in the delivery of the text and images. Image digitization via a frame grabber takes 1/30th of a second. Conversion of the image to a standard computer graphic format takes 45-60 sec. Text and image transmission speed on a local area network varies between 200 and 400 kilobytes (KB) per second depending on the network load.
  
  
  CONCLUSIONS
  We have made images from a laser disc of the Radiologic Learning File available through an Internet-based hypertext server. The images previously available through a single-user system located in a remote section of our department are now ubiquitously available throughout our department via the department's computer network. We have thus converted a single-user, limited functionality system into a multiuser, widely available resource.
authors.affiliation: Department of Radiology, Pennsylvania State University College of Medicine, Hershey 17033, USA.
authors.forename: D S
authors.initials: DS
authors.lastname: Channin
mesh_terms: D016251:CD-ROM; D003195:Computer Communication Networks; D009862:Online Systems; D011871:Radiology