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Evaluation of injuries caused by coronavirus disease 2019 using multi-nuclei magnetic resonance imaging 被引量:2
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作者 Qian Zhou Qiuchen Rao +5 位作者 Haidong Li Ming Zhang Xiuchao Zhao Lei Shi Chaohui Ye Xin Zhou 《Magnetic Resonance Letters》 2021年第1期2-10,共9页
The ongoing pandemic of coronavirus disease 2019(COVID-19)has been a great burden for the healthcare system in many countries because of its high transmissibility,severity,and fatality.Chest radiography and computed t... The ongoing pandemic of coronavirus disease 2019(COVID-19)has been a great burden for the healthcare system in many countries because of its high transmissibility,severity,and fatality.Chest radiography and computed tomography(CT)play a vital role in the diagnosis,detection of complications,and prognostication of COVID-19.Additionally,magnetic resonance imaging(MRI),especially multi-nuclei MRI,is another important imaging technique for disease diagnosis because of its good soft tissue contrast and the ability to conduct structural and functional imaging,which has also been used to evaluate COVID-19-related organ injuries in previous studies.Herein,we briefly reviewed the recent research on multi-nuclei MRI for evaluating injuries caused by COVID-19 and the clinical 1 H MRI techniques and their applications for assessing injuries in lungs,brain,and heart.Moreover,the emerging hyperpolarized 129Xe gas MRI and its applications in the evaluation of pulmonary structures and functional abnormalities caused by COVID-19 were also reviewed. 展开更多
关键词 COVID-19 multi-nuclei MRI Hyperpolarized 129Xe LUNG Brain Heart
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液体核磁共振中多核体系的量子模拟
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作者 黄珊珊 李鹏 何培忠 《中国医学物理学杂志》 CSCD 2020年第6期743-748,共6页
目的:基于量子力学原理,对液体核磁共振中的多核体系进行自旋动力学模拟。方法:首先把液体核磁共振实验过程中出现的化学位移、J耦合相互作用写成狄拉克算符,然后转化成矩阵形式,将它们代入密度矩阵的演化方程,在采样阶段使用观测算符... 目的:基于量子力学原理,对液体核磁共振中的多核体系进行自旋动力学模拟。方法:首先把液体核磁共振实验过程中出现的化学位移、J耦合相互作用写成狄拉克算符,然后转化成矩阵形式,将它们代入密度矩阵的演化方程,在采样阶段使用观测算符记录每个采样点的信号,最后使用傅里叶变换得到谱图。结果:通过量子模拟得到了多核体系演化的核磁共振谱图,与对应的理论预测及预期的实验结果一致。结论:在核磁共振中使用量子力学建模和模拟是完全可靠的,可用于辅助分析真实的核磁共振实验。 展开更多
关键词 量子模拟 核磁共振 多核体系 J耦合
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