1) develop a device for generating matter waves for imaging, including new principles and key technologies for generating matter waves, which can improve the efficiency of generating matter waves by wave sources and the beam quality of matter waves to meet the needs of imaging;
2) Modeling the interaction between matter waves and human tissues, and improving the quantity, quality and speed of extracting information from images by optimizing model parameters, reducing the misdiagnosis rate and positioning error;
3) Study the key components such as detectors, sensors or transducers for detecting matter waves, so as to make them have better sensitivity and resolution (spatial and temporal resolution) and positioning ability in treatment;
4) Amplify, shape and digitize the detected signal to prevent distortion in the process of computer recording and coding, and carry out methodological research to improve the efficiency and fidelity of signal transmission. This technology is increasingly realized by large-scale integrated circuits, and miniaturization, reliability, modularity and plug-and-play are the development goals;
5) Fast and efficient image reconstruction and display to meet the needs of image monitoring in image diagnosis and treatment;
6) eliminating noise and artifacts, improving image quality and reducing positioning error during treatment;
8) Design a new imaging and radiotherapy system, measure its performance indicators, and study better quality control and dose calculation methods;
9) Develop PACS system suitable for the characteristics of medical institutions in China, and the key technologies of digitalization of medical institutions.
In the field of medical image application, the following scientific and technical problems have been widely studied:
1) research on brain functional imaging, which is the most challenging research field in 2 1 century, and there may be many major breakthroughs;
2) Application in clinical diagnosis, focusing on the collection and analysis of human physiological and psychological information on the basis of improving anatomical accuracy.
Analyze and develop computer-aided diagnosis technology (MICAD) and virtual endoscopy technology based on medical images (including functional information);
3) In clinical treatment, we should develop surgical simulation, make surgical plans under the guidance of medical images, and increase interventional therapy.
And the verification of the implementation of the treatment plan;
4) How to accurately express the modeling of human physiology, psychology and anatomical structure in teaching and personnel training.
The 9 scientific and technological development directions and 4 applications related to medical imaging listed above cover a very wide range of imaging modes.
The invention and development of medical imaging equipment is a revolutionary progress in human disease diagnosis, and many scientists who promoted this progress won the Nobel Prize. Recently, two medical physicists, P.C. Lauterpur and P.Mansfield, won medical and physiological prizes. They are physicists in magnetic resonance imaging. According to the existing problems in this field and the impact on human progress after solving these problems, more medical physicists will win the Nobel Prize in this field in the future. Therefore, medical imaging physics is a sunrise discipline, and the industry related to this discipline is a sunrise industry.
At present, medical imaging equipment needs to continue to improve the imaging speed, temporal and spatial resolution of images, and improve the contrast of images. It has become a new hotspot to realize human imaging at molecular and genetic levels. After the publication of gene sequence, in order to understand the relationship between genes and biomacromolecules, diseases and gene expression, and their relationship with biomacromolecules, it is an important direction of medical imaging to image the whole human body with gene ligands (by radioactivity) and molecules. But nuclear medical imaging has advantages in this respect. At present, imaging devices are mainly single photon tomography (SPECT) and positron emission tomography (PET). However, due to the poor spatial resolution and the limitation of radiolabeled drugs, there is still a lot of work to be done to improve the equipment to achieve this goal. Nuclear medical imaging will be paid more and more attention in the future.