In DICOM standard, the composition format and exchange method of images and their related information are defined in detail. With this standard, people can establish an interface on the image device to complete the input/output of image data. DICOM standard is an industrialized standard based on computer network, which is helpful to transmit and exchange digital images between medical imaging devices more effectively. These equipments include not only CT, MR, nuclear medicine and ultrasonic examination, but also CR, film digitization system, video acquisition system and HIS/RIS information management system. VIDI-WebPacsSDK includes a complete DICOM server and WebDicomViewer.ocx, so you can easily build a PACS system. The SDK of WEBPacs is suitable for VB, VB.NET, VC++, DELPHI, C++ Builder, PB and Web development platforms, with low risk investment, and can quickly establish the HTML of Pacs system.