A paper published on the 28th by Nature magazine described a novel spectral imaging technique that combines the advantages of magnetic resonance imaging and gamma ray imaging, and is expected to lay a foundation for the development of new medical diagnostic tools.
Magnetic resonance imaging is to place the human body in a special magnetic field and use radio frequency (RF) pulses to excite the hydrogen nuclei in the body, causing the hydrogen nuclei to resonate and absorb energy. This is a very important diagnostic tool in the medical field because it has excellent spatial resolution and can distinguish individual features in images. The gamma ray detector is highly sensitive and can be used to detect trace radioactive tracers. These tracers can locate specific targets, so this image can be used to diagnose the distribution and number of cancer cells as well as brain and cardiovascular malformations. All along, these two technologies have their merits, but the advantages of both parties are difficult to have.
This time, the University of Virginia researchers Gordon Gates, Wilson Miller and team members invented a new imaging technology, first use of magnetic resonance to collect spatial information, and then use gamma rays to collect image information. The researchers demonstrated the feasibility of the technique by performing radioactive atom imaging operations in a glass cell. However, traditional magnetic resonance imaging methods require billions or more atoms to generate images.
At this stage, it takes about 60 hours to acquire the data of the example image using this technique, which is not ideal for clinical applications. However, the authors of the paper proposed that although the technical means still needs improvement in some aspects, such as processing speed, increasing the size of the detector or the amount of radioactive tracer may help overcome these problems.
In the news and opinion articles accompanying the paper, the University of Nottingham, UK scientists believe that the technology will help the study of biological and non-biological systems. (Reporter Zhang Mengran)
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