Medical imaging information system classification in practice, can be divided into four categories of medical imaging information system applications:
1, the implementation of a complete medical imaging information system system throughout the hospital, the goal is to support all the activities on the image within the hospital, integrated with the medical equipment, image storage and distribution, digital images in important diagnostic and consultative displays, images, archiving, and external information systems. archiving, and external information systems;
2. A medical imaging information system system implemented within the radiology department of a hospital, with the goal of improving the efficiency of the use of medical equipment within the department;
3. An image distribution system within the hospital, with the goal of assisting other departments of the hospital, especially the emergency room (ER) and intensive care unit (ICU), in obtaining the images generated by the radiology department;
4. Tele-radiology medicine, with the goal of supporting remote image transmission and display.
Medical imaging information system consists of three parts
1, Database Server SubSystem: used to manage images.
Medical image diagnosis occupies a considerable proportion in modern medical activities. With the continuous development of visualization technology, modern medicine has become more and more inseparable from the medical image information, in clinical diagnosis, medical research and other aspects is playing an extremely important role. Medical image information is diversified, such as ultrasound scanning images, color Doppler ultrasound images, nuclear magnetic *** vibration (MRI) images, X-CT images, X-ray fluoroscopy images, a variety of electronic endoscopic images, microscopic images of pathological sections. With the deep development of medical diagnostic visualization technology, people are making continuous efforts to seek for clearer and more diagnostic value of high quality medical images. Chinese hospitals have introduced a large number of imported advanced medical image equipment in the past decade or so, which has played an important and positive role in improving the diagnostic level and strengthening the management of hospital grades. Due to the financial problems and the level of instrument design, most of the medical imaging equipment does not consider the image storage and transmission functions, at best, the configuration of a printer or X-ray film for image recording. Doctors diagnosis is through the instrument screen image of the naked eye observation, based on personal experience to analyze the diagnosis, subjective component is more.
With the rapid development of electronic computer technology, especially multimedia technology, so that the storage and transmission of medical images possible, large-capacity hard disk, image information compression technology, read-write CD-ROM applications, so that medical images can be stored in large quantities. DICOM3.0 standard development so that the medical image and a variety of digital information in the transmission of computers have a unified standard, through the data interface with the Internet. The data interface and the Internet connection, you can carry on the medical image information remote transmission, realize the off-site consultation. PACS is to realize the medical image information management is an important condition, it will medical image from the acquisition, display, storage, exchange and output digital processing, and finally realize the image storage and transmission.
In addition, through the computerized intelligent processing of medical images and information, image diagnosis can be made to abandon the traditional visual observation and subjective judgment. With the help of computer technology, the pixel points of the image can be analyzed, calculated, processed, and relevant and complete data can be derived, providing more objective information for medical diagnosis. The latest computer technology can not only provide morphological images, but also functional images, which makes the medical image diagnosis technology go to a deeper level.
2. File Server SubSystem : Used to store images.
Mass storage devices are divided into the following four categories: magnetic media, optical media, magnetic tape and others (such as holographic storage) are still under development. Disk capacity is growing by leaps and bounds, and the way of the future is terabyte-class desktop disks, with prices dropping to 3 cents/MB by the year 2000. among optical storage devices, DVDs are the current hot spot, but their impact is nowhere near as great as that of CD-ROM technology was back in the day. dvd is currently used as a backup medium, but it is still deficient as a storage medium, and rewritable dvd's are not yet mature. New advances in magnetic tape include multitrack recording, magnetoresistive heads, and new formats that allow random access. Magnetic tapes are attractively priced, but they cannot be protected from moisture or from proximity to magnetic fields, and the requirements for storage locations are more stringent.
Backup (archiving) is a dynamic process that must take into account changes in technology, and an archiving strategy must take this into account. For example, it is not cost-effective for an organization to have a 7-year archive capacity of 11TB and therefore purchase 11TB of storage media now, but the price of storage media will fall in the future and technology will change.
The performance, reliability and capacity of the database is directly related to the performance of the PACS system.Every flow of images in a PACS system is related to the database, but the database technology for PACS has been neglected. This will change when PACS is integrated into MIS systems. The development of high availability technologies will become increasingly important as users become more dependent on PACS.
3, DICOM SubSystem: through the DICOM protocol and check the equipment connected to the operation.
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