Chinese scientists have developed a new gas magnetic resonance imaging instrument that not only can see the various lesions in the lungs, but also clearly see the oxygen absorption capacity and oxygen consumption of the lungs. This is of great significance for the prevention and treatment of lung cancer in China.
On the 7th, at the State Key Laboratory of Spectroscopy and Atomic and Molecular Physics, Wuhan Institute of Physics and Physics, Chinese Academy of Sciences, the patient wore a human "vest" high-sensitivity lung imaging probe, pushed into the NMR spectrometer, inhaled inert gas, and held the breath about 6 In seconds, the spectrometer is started at the same time, after which the check is over. The patient's gas magnetic resonance image is seen on the computer screen. There is a clear ventilatory defect in the lower left lobe of the patient, which is consistent with the patient's prior CT image. However, some small lesions were also shown on the right lung of the image, which was not found on the CT image.
In China, imaging techniques for clinical detection of lung diseases include chest X-ray (X-ray), computed tomography (CT) and positron emission computed tomography (PET). Although these examinations can see the disease in the lungs, they are not very clear and cannot provide comprehensive indicators for measuring the health of the lungs, such as pulmonary gas-gas exchange and gas-blood exchange.
To "light up" the lungs, the gas signal must be enhanced. The team led by researcher Zhou Xin, using the core technology of the cascade laser light pump, successfully developed the æ°™-129 gas polarization device, which obtained a gas signal that was 44,000 times stronger than the original gas signal. They developed a new "vest" high-sensitivity lung imaging probe that improves the excitation uniformity and reception efficiency of lung magnetic resonance signals, and efficiently and quantitatively obtains the kinetics of oxygen-carbon dioxide exchange, oxygen-blood exchange in the lungs. Imaging information allows the doctor not only to see structural changes in the lungs (such as fibrosis), but also to detect functional changes in the lungs (such as decreased inspiratory capacity).
Professor Wu Guangyao from the Medical Imaging Center of Zhongnan Hospital of Wuhan University said that compared with traditional CT examination, the new technology can visualize lung function without contact, non-invasive and non-radioactive, which increases the reliability of early diagnosis of doctors, and does not have to wait until A lesion can appear in the lungs to confirm the diagnosis.
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