Summary

INTRODUCTION

This handout shows how to install WebDAS on your own PC. WebDAS is not a commercially available product. It is a concept of a Do-It-Yourself DICOM server. WebDAS is a combination of many resources on the Internet. Some of the resources are provided from our institution. You can make the DICOM server with web-based image viewer and reporting. This handout shows how to build up the WebDAS on Linux Operating system although WebDAS can be built on various kinds of operating systems. The core software is the Central Test Node (CTN) which has been developed at the Electronic Radiology Laboratory (ERL), Mallinckrodt Institute of Radiology, Washington University in St. Louis. We added JPEG image generating function on CTN. These compressed images make it easier for users to access the DICOM images in the server with a web browser. We provide a DICOM image viewer, which is made with JAVA applet, which makes users to view the original DICOM images with the browser. This viewer starts up from the web browser. Users can view the original DICOM images and change the window level, window width, zooming level, number of images and etc. We also provide web application files, path code for CTN alteration.

back to index

CONCEPT of the WebDAS

Followings are the concept of the WebDAS.

• WebDAS is not a commercially available product
• Resources of the WebDAS should be on the Internet and get them for free.
• WebDAS should be made with the latest versions of the resources.
• WebDAS is not compatible with strict security. It is recommended to use in the secure LAN environment.
• WebDAS is integrated with web applications.

  WebDAS is useful for the people who want to make their own DICOM server or who need to setup DICOM server with very low cast. WebDAS is a good training material for studying DICOM and web database.

CONDITION of AUDIENCE

• Basic knowledge of Linux and UNIX
• Computer with the Internet connection
• Basic knowledge of how to use the WWW and FTP.
• Time and effort
• Not enough money to buy expensive server system. ;-)

INSTALL ENVIRONMENT for this handout

• OS : Red Hat Linux 8.0 FTP edition
• DBMS : PostgreSQL 7.2.3
• WWW server : apache 1.3.27
• WWW server side scripting language: PHP 4.2.3
• DICOM server: CTN 3.0.4
• LessTif: lesstif 0.93.36

  Any distribution of Linux ( http://www.linux.org ) should be OK.
  We used RedHatLinux8.0 ( http://www.readhat.com ) : one of the most popular distributions of Linux.

OUR ORIGINAL RESOURCES

We provide following resources. These files are necessary for the WebDAS installation.

• patch file for CTN 3.0.4
  • JPEG image generation
  • Alternation of facilities source code
  • Configuration file for the test database
• web application on the WebDAS
  • html documents
  • php documents
  • JAVA applet DICOM viewer
  • Database configuration for reporting
• Installation manual
  • This document