Electronic Fans News : Recently, an international research team has created a new X-ray breast imaging method that can take about 25 times lower radiation than the commonly used 2D radiography when taking 3D X-ray images of the breast. dose. At the same time, the new method can also increase the spatial resolution of the generated three-dimensional high-energy X-ray computed tomography (CT) diagnostic images by 2 to 3 times. Related research papers were published in the online version of the Proceedings of the National Academy of Sciences on the same day.
The current commonly used breast cancer scanning technique is "dual view digital mammography". Its defect is that it can only provide two images of breast tissue, which explains why 10% to 20% of breast tumors cannot be detected. In addition, this type of photography may occasionally be abnormal, causing misdiagnosis of breast cancer.
Although X-ray technology such as CT can generate accurate three-dimensional visual images of human organs, it cannot often be used in the diagnosis of breast cancer, because it may cause long-term effects on breasts and other radiation-sensitive organs. The risk is too high.
New technologies are expected to overcome these limitations. Researchers are currently using synchrotron X-rays to test this technology. Once it is put into use in hospitals, CT scanning will become one of the diagnostic tools that can complement dual-view digital mammography.
The use of high-energy X-ray and phase-contrast imaging technology, coupled with a complex new EST mathematical algorithm, can reconstruct CT images based on X-ray data, making CT scans promising for early breast cancer screening and becoming a powerful tool to fight breast cancer. The body tissue will become more transparent under the irradiation of high-energy X-rays, so the required radiation dose can be significantly reduced by about 6 times. Phase contrast imaging also allows the use of fewer X-rays when taking the same picture, and the EST algorithm can also achieve the same image quality with a 4x reduction in radiation. In this way, the research team took 512 breast images from multiple different angles, and based on this, formed a three-dimensional image with higher definition, contrast and overall image quality than traditional mammography.
Researchers claim that these high-quality high-energy X-ray CT images are the result of 10 years of hard work at the European Synchrotron Radiation Source (ESRF) Research Center, as well as the University of Munich, Germany, and the University of California, Los Angeles. They also said that the next research goal is to realize the early visualization of other human diseases based on this technology, and develop an X-ray source of suitable size, trying to realize the clinical application of this technology as soon as possible.
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