A virtual reality system is a computerized virtual system that can be created and expanded arbitrarily without external interference, and can provide the operator with a realistic experience and cognitive feelings. It has the technical characteristics of perception, immersion, interaction, conception, etc., so that the operator can be supplemented with the necessary equipment and tools to interact with the objects or items in the virtual environment, and then comprehensively access the virtual environment contains a variety of spatial information and logical information.
1. Virtual Reality Technology in Medical Development
1.1 Early Development of Virtual Reality Technology in Medical Research
As early as in the 1980s, American medical researchers first began the study of virtual images of the human body. They were a male and female cadaver anatomy and anatomical part of the digital scanning, according to the data obtained for compression and organization, the establishment of the world's first "digital human". The operator can carry out arbitrary dissection of the "digital human" on the computer monitor, and the image of the human body can be scaled locally.In the 1990s, the Institute of Medical Technology at the University of Hamburg in Europe created a 3D virtual human body atlas for 3D visualization teaching and research. Students can freely perform various operations in the 3D human body space, and in 1999, "virtual frog dissection" appeared on the Internet. And into the 21st century, with the rapid development of computer technology, virtual reality technology has now been more mature application in medicine.
1.2 The application of virtual reality technology in medical research
Virtual reality technology has many practical applications in the medical field, the current more widely used virtual systems are: surgical virtual surgery simulation training, virtual internal medicine diagnosis, traditional Chinese medicine massage, sports physiotherapy and recovery, digital hospital medical simulation and teaching and so on.
2. Biomedical simulation applications
2.1 The use of virtual reality technology in medical teaching
Virtual reality technology can be personalized medical diagnosis, treatment, realistic expectations of different treatment options in the human body on different reactions. Compared with the traditional subjective judgment, in the virtual human body to carry out a variety of diagnostic and therapeutic tests can not be carried out on real people, can be based on the treatment data obtained and the human body response to scientific analysis and judgment, you can make a more rational and real and feasible diagnostic and therapeutic programs. The virtual surgery simulation system can create a virtual surgery environment based on a variety of medical imaging information and data, and build a 3D model in the virtual environment to design the incision position and angle, and preview the surgery process, from which it can be predicted in advance the problems that may arise during the surgery and take remedial measures, thus improving the success rate of the surgery. With this virtual system, doctors can more reasonably choose to develop surgical programs and methods to reduce the surgery to the patient to bring a variety of injuries and injuries, and can improve the accuracy of accurate judgment of the location of the lesion, a variety of complex medical and surgical procedures have a very good auxiliary judgment effect.
Investing in expensive experimental objects and equipment is a huge burden for medical research organizations, through the establishment and application of virtual surgery system, not only can make the economic burden of medical research organizations significantly reduced, but also can effectively shorten the surgical training time of researchers. The virtual surgery training system can provide an immersive virtual environment, and its realistic reproduction effect can make the training process as the real surgery consistent, which allows researchers to get a real sense of the actual surgery on the spot.
In addition, in the teaching activities of medical universities, the virtual reality system is not subject to specimens, venues, time and many other factors, so that the teaching activities can be carried out anytime, anywhere, as needed, in order to reduce the cost of teaching at the same time to obtain good teaching results. At present, some of the virtual reality system developed specifically for medical training, internship and research, the degree of simulation is very high, its superiority and effect is incomparable to the traditional teaching activities.
2.2 Application of virtual reality technology in drug research
Virtual reality technology can be in the drug research in the micro world macro. Through the microscopic world of chemical molecules and other proportions of the magnification to the size of our eyes can be observed, can make the research and technical personnel realistically and clearly see a variety of different drug formulations in different conditions to occur the whole process of chemical reactions, convenient and effective acceleration of the drug research and development cycle, and can be accurately analyzed on the drug formulations of the pharmacology of the drug to improve the reliability of the function of the drug. For example, medical researchers in the United States have proposed the application of VR technology to carry out the so-called "molecular in situ" research. Researchers in this project group are using this method to develop the synthesis of anti-cancer drugs.
2.3 The application of virtual reality technology in rehabilitation medicine
The application of virtual reality system in rehabilitation therapy is also relatively wide, mainly reflected in the following aspects: in the field of attention deficit, spatial perception disorders, memory disorders and so on have achieved very good rehabilitation efficacy. Virtual reality technology by simulating a variety of different treatment scenarios and set up a variety of different stimulus treatment programs, patients can be in a safe and effective treatment environment for rehabilitation therapy.
3. Challenges faced by virtual reality technology
In the medical field of virtual reality and its related technology research level is currently in our country and even countries around the world, the overall is still relatively low in the application stage. At present, the main difficulties are: treatment and evaluation standards are not relevant evaluation standards, the interactivity and ease of use of the application system is not perfect. Virtual reality system equipment and its peripherals cost-effective example of imbalance, equipment is relatively expensive, resulting in large-scale application of the time is not mature enough.
4. Virtual reality technology in the medical application of the outlook
Virtual reality technology research involves artificial intelligence, computer graphics, intelligent control, psychology and many other disciplines, is the product of many related disciplines knowledge cross, integration. However, we must rationally see, although virtual reality technology has a broad application prospects and strong technical potential, but virtual reality technology is still in the primary stage, there are still quite a lot of unresolved theoretical issues and technical barriers, which constitute the current direction of research and development. With the rapid development of science and technology, in the near future we will be able to overcome these difficulties, so that virtual reality technology in the medical field to make greater contributions.
But the market is full of virtual simulation software, choose what kind of virtual simulation software is good? Through the visit of many medical schools, "red Pingguo" software is the most suitable choice, advanced technology and equipment, far beyond the peer, is the best choice for modern medical school experiments; "red Pingguo" software is Henan Hengmao Chuangyuan Technology Co. The main products include virtual simulation teaching experiment platform of functional science, ultra-high-definition microscopic morphology virtual simulation teaching system, clinical thinking practical training system of Chinese and Western medicine, three-dimensional human anatomy system, imaging diagnosis practical training system, nursing three-dimensional practical training system, etc., which basically cover all medical specialties, and this series of products have been widely used in more than 200 schools, responding to the Ministry of Education's efforts to build the "Golden Class" of the new era. This series of products has been widely used in more than 200 schools, responding to the call of the Ministry of Education to build a new era of "Golden Class", improving the quality and efficiency of teaching and promoting the development of discipline construction.