How pacs system is organized

The concept of PACS was introduced in the early 1980s. The idea of establishing PACS was mainly caused by two main factors: one was the creation of digital imaging equipment, such as CT equipment, which enabled medical images to be obtained directly from the examination equipment; the other was the development of computer technology, which enabled the storage, communication, and display of high-capacity digital information.

Medical imaging systems studied in the mid-to-late 1980s mainly used specialized equipment, and the whole system was very expensive. By the mid-1990s, the creation of computer graphics workstations and the development of network communication technology led to a decrease in the overall price of PACS. Into the late 1990s, the rapid improvement in microcomputer performance and the rapid development of networks allowed PACS to be built on a level that would be acceptable to a larger number of hospitals.

With the development of network technology, it was recognized that image format standards alone were not enough, and that communication standards also played a very important role in PACS. Immediately in 1993 by the ACR and NEMA in the ACR-NEMA 2.0 standard based on the addition of the communication aspects of the specification, while in accordance with the imaging examination of the information flow characteristics of the E-R model reworked the image format of some of the information in the definition of the standard DICOM 3.0.

With the continuous development of applications, the DICOM standard is also constantly updated, and the types of medical images it supports are also increasing, and it has been expanded from the original ACR-NEMA standard that only supports radiological images to support other images such as endoscopy and pathology.

People have recognized that the medical imaging system should be an important part of the hospital information system, and PACS should communicate information with other systems to form a hospital information whole.