Have you heard about 4D movies, have you heard about 4D medical treatment ? The 4D medical imaging technology jointly developed by Chongqing University of Posts and Telecommunications and the Chinese Academy of Sciences is expected to be the first to be applied in Chongqing hospitals.
What is the 4D medical imaging technology and what effect can it achieve? Yesterday, the reporter came to the Chongqing Key Laboratory of Computational Intelligence of Chongqing University of Posts and Telecommunications, and interviewed the head of the project, Professor Li Weisheng, deputy dean of the School of Computer Science and Technology of Chongqing University of Posts and Telecommunications.
4D medical imaging directly observes the beating heart
“Medical imaging is moving from 2D to 4D.†Li Weisheng introduced that 2D medical imaging has been well known to the public. For example, the most common CT films and ultrasound films belong to 2D; 3D medical imaging has gradually emerged in recent years. Layers of different sections of organs and bones were taken. After more than 1,000 shots were taken, three-dimensional reconstruction was performed through massive data processing, and a multi-angle rotating and visual three-dimensional model was formed in the computer system. For example, if a tumor appears in the brain, various information such as its size and shape can be accurately reflected by the stereo model, and the doctor can accurately diagnose it accordingly.
Li Weisheng introduced that at present, 3D medical imaging technology has been tested in some hospitals in China, and the feedback situation is quite satisfactory.
Li Weisheng said that the concept of adding time on the basis of 3D is 4D medical imaging technology, which can dynamically reflect the real-time changes of organ function. "Commonly speaking, it is the ability to let doctors and patients see an active tissue, such as a beating heart, breathing lungs, etc."
Cloud platform supports 15,000 times more memory than ordinary computers
Increasing the time dimension is not easy, and the biggest difficulty is the large amount of data processing. Li Weisheng said that to complete a three-dimensional reconstruction of an organ, the amount of data processing is between 4G and 128G. For 4D imaging, its data processing capacity is 200 times that of 3D imaging in 1 minute, reaching 800G-25600G.
Therefore, the technical requirements for 2D to 4D are obvious. "For example, if you use a normal computer, 2D images can be instantly displayed. 3D MRI (MRI) inspections may take more than ten hours or dozens. Hours," Li Weisheng told reporters that it may take more than a week to process 4D imaging with a normal computer, but this does not meet the timeliness of medical treatment.
However, the development of cloud computing has solved the worries of such a huge amount of data processing. The 64 blade servers used in the re-mail cloud platform provide fast enough computing power for 4D imaging. Its memory is more than 15,000 times that of a normal computer. Li Weisheng calls it a hardware requirement.
What is a blade server? "The blade server is a server unit with multiple card types embedded in the rack cabinet. It is a server platform that achieves high availability and high density. It is specially designed for special application industries and high-density computing environments. Each blade is actually a system. Motherboard.†Li Weisheng said that the cloud platform is expensive, and the laboratory needs to maintain a constant temperature of 25 °C and a humidity of 40%-60% for a long time.
National fund project Chongqing Hospital is expected to take the lead in application
“Chongqing is currently building a cloud computing center. By then, the hospital can build it by itself, and it can be used directly.†Li Weisheng told reporters that 4D medical imaging technology requires a special image processor in addition to high requirements for software models and hardware configurations. Various technical details are required. “For example, the quality of imaging is susceptible. Due to the concept of time, it is necessary to keep the patient in a static state during the detection process, and to minimize the extra movement, which may affect the imaging quality.â€
At present, 4D medical imaging technology is still in the research and development stage internationally. The Li Weisheng team started the project from January 2014 and has been supported by the National Key Research Fund. "Although this technology is still immature and there is still a distance from clinical physiotherapy, its prospects are very broad. This is a trend in medical care in the future. Through our exploration, after the relevant research results of 4D medical imaging technology are fully mature, I City hospitals are expected to be the first to use."
Guided surgery B-ultrasound NMR is possible
Professor Wang Fuyou, head of the 3D printing laboratory of the Southwest Military Hospital of the Third Military Medical University, believes that 3D and 4D technologies will provide more intuitive and effective examinations, and it will be based on multiple sections and time-sensitive multiple sections for rapid and accurate diagnosis. Faceted anatomy real-time imaging, complete collection of organ tissue information. The combination of imaging analysis results such as length, surface area, perimeter, diameter, angle, and motion path is combined with a professional measurement comparison database to make qualitative and quantitative analysis more accurate.
Wang Fuyou introduced that 4D imaging technology is especially important in obstetrics and gynecology, internal medicine, urology, cardiology, surgery and orthopedics. Doctors can get scene results that are more consistent with the actual situation in the operation, so compared with 2D imaging. The quality of flying over is conducive to the efficient diagnosis and precise treatment of the disease.
Li Weisheng said that B-ultrasound, nuclear magnetic resonance, etc. are expected to use 4D medical imaging technology. "For example, surgical treatment can be guided to avoid damage to normal tissues caused by respiratory movements and heartbeat during surgery."
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