Guide
The MR technology generates a 3D holographic image model by reading the patient's CT, nuclear magnetic resonance, X-ray film and other data, and can be seen after wearing the MR glasses. When patients and their families wear MR glasses at the same time, doctors can drag 3D images to everyone to explain them at a glance. The virtual virtual lesion can also be moved to the surgical field of view, the parameters are adjusted, and combined with the real lesion to provide reference information for the operation.
The doctor wears MR (mixed reality) glasses for surgery, zooming, rotating, changing the transparency of the patient's affected part of the 3D holographic image, and superimposing it on the actual lesion. This seems to be in the science fiction film. The scene that will appear is now a reality.
On May 25th, the 21st Century Business Herald reporter experienced this technology at the Medical Mixed Reality Cloud Launch Conference hosted by the Microsoft Building in Beijing. Presented in front of the reporter is a three-dimensional model of the diseased part of a male sacral tumor patient. In addition to stereoscopic 360-degree rotation and zooming, green tumors can be clearly seen, and details such as arterial vessels and tibia around them can be clearly presented. In addition, you can select the part you want to see, and remove the part you don't want to see, in order to better understand the lesion or simulate the three-dimensional conformation of the defect after resection.
It is understood that in June 2017, Wuhan Union Hospital successfully achieved the world's first MR-guided surgery for a hip fracture patient. In January 2018, the hospital through the remote consultation system, guided the Xinjiang Bozhou People's Hospital, successfully implemented the world's first mixed reality technology remote consultation.
Li Xiaoming, deputy dean of the Bethune International Peace Hospital of the People's Liberation Army, believes that MR holography can play a role in surgical planning, preoperative discussion, doctor-patient communication, intraoperative guidance and medical education in precision surgery, and has a very broad application prospect.
However, Lu Tong, chairman of the medical team of Beijing Weizhuo Zhiyuan Medical Technology Development Co., Ltd., told reporters that the technology has just started. At present, there is only a preliminary holographic prototype, and technologies such as hardware and algorithms are needed together. development of. In addition, medicine is facing the rigorous science of life. New technologies need to change medicine rather than subversion. It requires medical system knowledge to keep moving forward.
Give the doctor "the eye of God"
"It's amazing. I can clearly understand her condition, including the condition of her broken bones. I can see it at a glance." The family members of the world's first MR-guided surgery mentioned above, in an interview with CCTV reporters, Express his perception of this technology.
MR English is Mixed Reality, which is a mixed reality, which brings viewers an immersive browsing experience by presenting virtual scene information in real-life scenes.
The 21st Century Business Herald reporter learned that in the medical field, nuclear magnetic resonance, X-ray technology, etc., which are well known to the public, finally produced two-dimensional film, and doctors need to watch movies. This is also the most traditional medical presentation technology. However, this method of presentation cannot be visualized and requires the doctor to reconstruct in his mind with his experience.
There are also medical presentation methods such as 3D printing and planar 3D reconstruction. Although 3D printing can be intuitive and stereoscopic, the cost is high. Once the molding can not modify the editing, the planar three-dimensional rendering technology can be stereoscopically displayed, and the modification is convenient, but it still relies on the two-dimensional flat panel display, which is not really three-dimensional.
The MR technology generates a 3D holographic image model by reading the patient's CT, nuclear magnetic resonance, X-ray film and other data, and can be seen after wearing the MR glasses. In addition, 3D images can be dragged to the real space, and any operations such as zooming, rotating, and changing transparency can be performed, and it is also convenient to modify, edit, and render, and realize accurate transmission and sharing of information.
For doctor-patient relationships, this technology helps to change the information asymmetry that exists between doctors and patients. In the past, when doctors introduced their illnesses to patients and their families, some obscure medical terms and films often made them difficult to understand. With this technology, patients and their families can wear MR glasses at the same time, and doctors can drag 3D images to everyone to explain them at a glance.
In addition, stereoscopic virtual lesions can be moved to the surgical field of view, parameters can be adjusted, combined with real lesions to provide reference information during surgery.
For example, the fracture site of a fractured patient can be superimposed and superimposed on a real lesion. Under normal circumstances, the doctor can't see the patient's bones, but after superimposing the image, it is equivalent to become transparent. If you need to fix the fracture with a screw, the doctor can always know the direction, angle and nailing of the nail, just like the "eye of God" with perspective.
Lutong believes that when human body knowledge is applied to organizational operations in the past, the digital information obtained is in the screen, that is, the space in the computer, and the actual operation is in the real space. The computer space and the actual space cannot be fed back to the doctor at the same time. It is impossible to accurately apply medical knowledge and digital information.
"The most important change made by MR is to integrate the existing digital technology, including three-dimensional visualization technology, navigation technology, robot technology, etc., with real space, and enlarge the original digital technology." Lutong Tell the reporter.
Li Xiaoming said that MR has great feasibility in the design of fine surgical procedures, such as accurately determining the spatial structure relationship around the tumor before surgery, and accurately designing the repair plan after tumor resection. It is also feasible in the refinement operation and identification and protection of important structures during surgery, and has a very broad application prospect.
Helping telemedicine and teaching
MR technology is also bringing new possibilities for telemedicine.
Not long ago, the State Council executive meeting was held to determine the development of "Internet + medical health" measures. Among them, telemedicine is frequently mentioned.
In April this year, Premier Li Keqiang said that when visiting the remote consultation center of Shanghai Huashan Hospital, telemedicine was concerned with the health of the people. This year, the central government should increase hardware investment in poverty-stricken areas such as the central and western regions in the above two aspects. Priority is given to speeding up telemedicine, and using "Internet + medical" to make quality medical resources more popular.
In some areas where China's medical resources are relatively scarce, local doctors often need support and guidance from doctors from other places in the face of some intractable diseases. If a foreign doctor rushes to the patient's location, there will be a large economic and time cost, and telemedicine provides a solution to this problem.
Unlike teleconsultations in the form of video and voice, MR technology can break the boundaries of time and space and “take†remote experts into the local operating room.
For example, the remote consultation of the three hospitals in Wuhan Union Hospital mentioned above, for example, pre-operative Wuhan Union Hospital, Xinjiang Bozhou People's Hospital and Virginia Tech University scholars dragged the lesion imaging to the real space to communicate preoperatively. During the operation, the doctors of Wuhan Hospital only need to write and draw in front of the computer. In the operating room of Xinjiang, there will be a marker pen “crossing†in the past, marking the “lesion†and guiding the doctors in Xinjiang to complete the operation.
“The National Health and Health Committee clearly understands the discipline construction and the county-level hospitals, and these require telemedicine, which is also the direction of MR.†Du Xian, editor-in-chief of the People’s Health Publishing House.
Tan Wei, director of the Education Technology Center of the General Hospital of the Chinese People's Liberation Army, said that mixed reality technology can also play a role in telemedicine education. There are still inadequacies in telemedicine education, such as imperfect anatomical information presentation, poor interactivity in the teaching process, learner interest and experience, and MR technology can make up for these problems.
Through the superposition of physical teaching aids and mixed reality models, clinical skills training can be effectively carried out to improve learning efficiency, accelerate the growth of young doctors, and shorten the training period of medical students.
How is the market reacting to such technologies and products?
Zheng Gang, CEO of Beijing Weizhuo Zhiyuan Medical Technology Development Co., Ltd., told 21st Century Business Reporter that more than 150 top three hospitals in China and more than 200 experts have already experienced it, and some have entered the procurement process.
Lutong said that he hopes that doctors can change their mindset and change from the original “handicraft person†to the surgery designer.
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