Recently, Xiong Yan, deputy director of orthopedics department of the army characteristic medical center (Daping Hospital) of the Army Military Medical University, led the medical team to independently develop MR (mixed reality) + DAA (minimally invasive direct anterior approach) hip replacement technology, which successfully performed surgery for many patients with hip arthritis and femoral head necrosis. Recently, virtual imaging technologies such as virtual reality (VR), augmented reality (AR) and hybrid reality (MR) have attracted more and more attention. In the medical field, virtual imaging technology has also been widely used to help precision medicine. Virtual imaging technology will become a good helper for doctors Virtual imaging technology represented by VR / Ar / MR breaks the boundary between digital virtual world and physical real world, and will become a good help for doctors. Xiong Yan said: "the use of MR technology in surgery can integrate and overlay virtual images with real anatomical structures, which is equivalent to installing 'perspective eyes' for doctors, so as to carry out more accurate surgical treatment for patients." The operation performed by Xiong Yan's team is to remove the damaged part and replace it with an artificial joint prosthesis for patients with hip osteonecrosis of the femoral head. Under Mr holographic projection, the virtual image coincides with the patient's body parts and surgical markings. The doctor can quickly see the internal structure of the patient's surgical site, the position of pelvis and acetabulum and the position of standard angle during operation. Without the assistance of additional incision and nail rod, the acetabulum can be accurately polished and the acetabular prosthesis can be accurately placed. The operation took only about 1 hour. The whole process is accurate, minimally invasive and nondestructive. After the postoperative anesthesia is awake, the patient can get out of bed and walk. "Virtual imaging technology can help doctors perform surgery more accurately. It can be said that with the assistance of these technologies, doctors' surgery can become more three-dimensional and intuitive." Xiong Yan said that the industry has long noticed the role of virtual imaging technology in surgery, and many hospitals at home and abroad have made relevant exploration. As early as April 2019, the Department of hepatobiliary and pancreatic surgery of Xiangya Hospital of Central South University joined hands with the school of materials of Central South University to enable MR technology to complete total laparoscopic pancreaticoduodenectomy for a patient with abdominal tumor. According to the hospital, this is the first operation in China to use MR technology to assist endoscopic pancreaticoduodenectomy. On March 15 this year, the Department of throat, head and neck surgery and orthopedics of the First Affiliated Hospital of Zhengzhou University implemented the country's first Mr surgery for cervical spondylosis with piriform fossa cyst. Orthopedics, tumor surgery, neurosurgery, plastic surgery and other departments also applied it to the preoperative simulation of some operations. In recent years, in addition to surgery, medical imaging, telemedicine and medical / health education are all hot fields in the application of virtual imaging technology. In the field of medical imaging, the well-known ultrasonic examination introduces virtual imaging technology. The AR based ultrasonic scanning guidance platform can provide real ar scanning guidance that can run on handheld devices for the positioning and image acquisition problems in ultrasonic scanning, so as to realize timely and standardized ultrasonic image acquisition and screening. In telemedicine, with the support of 5g network, virtual imaging technology increases visibility, reduces delay risk, and greatly improves the accuracy of remote diagnosis. In the field of medical health education, with the help of Mr / VR's ability of "turning plane into three-dimensional", the teaching and learning efficiency of anatomy, surgery and other courses will be improved. The "real" patient hologram generated by Mr, which can show various symptoms and signs, is expected to replace the bulky human simulator for clinical scenario simulation. In doctor-patient communication, doctors can show patients' lesions, tissues and organs to patients and their families through virtual imaging technology, so that they can better understand the operation process. In addition, virtual imaging technology has also begun to be applied in the treatment of mental diseases. In foreign countries, virtual imaging technology has been used to treat post-traumatic stress disorder (PTSD) of veterans, phantom limb pain of people with disabilities, ADHD, autism, cognitive impairment and so on. Combine with other technological powers or usher in a larger market "However, at present, virtual imaging technology is still in the stage of R & D and exploration in practical clinical application." Xiong Yan said that "Mr + medicine" has broad prospects, but Mr technology needs the cooperation of medicine, imaging, image processing engineers, software engineers and other disciplines to further increase the individualized accuracy and automatic matching, Provide technical support for individual perfect precision surgery in the future. Xiong Yan introduced that from the perspective of surgeons, virtual imaging technology can accurately navigate for different operations, but at present, the accuracy in surgery can not reach millimeter level matching, and the autonomous navigation function also needs to be adjusted by doctors during surgery. "Technology enabled precision medicine is both a demand and a trend." Zhang Jiyang, director of the office of the big data artificial intelligence center of Zhongshan Hospital Affiliated to Fudan University, said that although the application of virtual imaging technology in the medical field has just started, it is expected to bring subversive changes to the medical service field in the near future. However, Zhang Jiyang also pointed out that the high technical barriers to innovation and high R & D costs in the medical field, coupled with the long-standing medical habits and concepts that need time to change, make some solutions still stay in the clinical trial stage or the early stage of commercialization. At the same time, the potential uncertainty brought by the market, the unreasonable positioning of new medical technologies by all parties and the security of patients' personal information may also become obstacles to the implementation of innovation. He believes that by timely obtaining user feedback in the integration of application scenarios and connecting virtual reality technology with medical cloud, big data, clinical decision support system and medical robot, it may be able to open a unique door of the medical industry and meet a huge market. (outlook new era)