PACS is a computer network for transmitting medical images, and the protocol is a prerequisite for information transfer. The Digital Imaging Communications in Medicine (DICOM) standard is the first widely accepted global standard for medical digital imaging and communications, which utilizes the standard TCP/IP (Transfer Control Protocol/Internet Protocol) network environment to enable direct networking between medical imaging devices.
DICOM, which stands for Digital Imaging and Communications in Medicine, is an industry standard for the transmission of medical images and information between different electronic devices, developed by the American College of Radiology (ACR) and the International Federation of Electronics Manufacturers (NEMA)****. It is an industry standard for the transmission of medical images and information between different electronic devices.
The DICOM standard is an important network standard and protocol that ensures that PACS becomes a fully open system. The DICOM 3.0 standard is now in use, and it consists of nine major parts: Part I: Introduction and Overview; Part II: Compliance; Part III: Message Object Definition; Part IV: Service Class Specification; Part V: Data Structures and Semantics; Part VI: Data Fields; Part VII: Message Exchanges; Part VIII: Network Communication Support for Message Exchanges; Part IX. peer-to-peer communication support; and the relationship between the parts of the standard.
2. How PACS intercepts images
2.1 DICOM direct access
Using the standard ACR/NEMA-compliant instrumentation output interfaces on MRIs and other devices, the 12Bit digital image data is read directly and then transmitted to the imaging center for storage via a computer network. It is characterized by: no distortion in the display and processing of the image because the data is read directly from the DICOM interface of the device, and the quality of the image data is better because the basic unit of the image data is 12Bit.
2.2 Video Access
Using the video output terminal of the console equipped with CT and other equipment, it is possible to intercept the 8Bit inspection image data, and then transmit it to the image center for storage through the computer network. Its characteristics are: no need to buy a special medical instrument DICOM signal output interface, low cost, due to the basic unit of the stored image data for 8Bit, there will be distortion.
2.3 Scanner Access
Using the scanning process of a dedicated medical scanner, the film information will be digitized and input to the computer, and then transmitted via the network to the imaging center for storage. It is characterized by the ability to capture 12Bit digital images, and at the same time save the storage space of the film library and management troubles.
3. PACS system size issues
3.1 Department-level PACS:
Small PACS are usually established within a department, such as radiology. It mainly focuses on the function of the medical equipment itself as well as the purpose of the test. Small PACS mainly has the functions of image archiving, image query, image extraction, image *** enjoyment printing and auxiliary diagnosis.
3.2 Hospital-wide PACS:
Medium-sized PACS are usually set up within a hospital, with a network connection between hospital departments, so that when a patient has had a CT scan, a B-mode ultrasound, or an X-ray examination, these systems are able to deposit image and text reports into the computer network. Any terminal monitor in the hospital can be very convenient to take out the patient's text and image information, will be a variety of information [DICOM tools free download] DICOM Anonymizer 3.0.0 data and images are concentrated in a display. In this way, the clinical department needs any image information to study the diagnosis and treatment, sitting in front of their own monitors will be able to contrast the results of several kinds of inspection images, for the diagnosis and the development of surgical programs to bring great convenience.
3.3 Regional PACS:
Large-scale PACS mainly refers to the network between the cross-region, which realizes the medical image **** enjoyment between the major hospitals, telemedicine, etc., which relies on the Internet network to transmit data.
Currently, the WWW service on the Internet is the most popular information retrieval service program on the Internet network, which is able to integrate various types of information resources, such as static and dynamic images, text, sound and data, to realize online data **** enjoyment. However, the network protocol HTTP that WWW complies with is a universal international standard on the Internet, and DICOM that PACS complies with is an international standard for global medical digital imaging and communication. Therefore, it is necessary to set up a specialized gateway that combines WWW and DICOM, and to take advantage of the convenience and versatility of WWW and the wide range of applications that DICOM has been used for in the specialized field of medical information systems to establish a high-level protocol conversion service program. It is a high-level protocol conversion service program. In this way, the use of browser software can get the patient's medical image, the doctor can operate on this image and make a diagnosis
Well, I think that you can search more on the Internet in this regard, the software company, you can also call and ask on the installation of the hospital's chant