Due to the high solubility,high reversibility,and low cost of iodide,iodine-based redox flow batteries(RFBs)are considered to have great potential for upscaling energy storage.However,their further development has bee...Due to the high solubility,high reversibility,and low cost of iodide,iodine-based redox flow batteries(RFBs)are considered to have great potential for upscaling energy storage.However,their further development has been limited by the low capacity of I−as one-third of the I−is used to form I3−(I2I−)during the charging process.Herein,we have demonstrated that the pseudohalide ion,thiocyanate(SCN−),is a promising complexing agent for catholyte of iodinebased RFBs to free up the I−by forming iodine-thiocyanate ions([I2SCN]−)instead of I3−,unlocking the capacity of iodide.Applying this strategy,we have demonstrated iodine-based RFBs with full utilization of iodide to achieve high capacity and high energy density.Both the zinc/iodine RFB and polysulfide/iodine RFB with SCN−complex agent achieve their theoretical capacity of around 160 A h Lposolyte^(−1)(6.0MI−in catholyte).Therefore,the zinc/iodine RFB delivers a high energy density of 221.34Wh Lposolyte^(−1),and the polysulfide/iodine RFB achieves a highenergy density of 165.62Wh Lposolyte^(−1).It is believed that this effective catholyte engineering can be further generalized to other iodine-based RFBs,offering new opportunities to unlock the capacity of iodide and achieve high energy density for energy storage.展开更多
Aim: Investigating the incidence of non-renal acute adverse events (AAEs) in patients undergoing unenhanced or enhanced computed tomography (CT) or magnetic resonance (MR) (four groups) using the ac- tive interview-me...Aim: Investigating the incidence of non-renal acute adverse events (AAEs) in patients undergoing unenhanced or enhanced computed tomography (CT) or magnetic resonance (MR) (four groups) using the ac- tive interview-method. Methods: The imaging procedure followed the standards of the department. Furthermore, the iodine-based (nonionic monomer) and gadolinium-based (cyclic) contrast agent was the same as used for all other examinations in the department. All patients were interviewed for 72 hours after the MR or CT examination regarding occurrence of AAEs using a structured questionnaire. Results: A total of 1358 patients (259 with enhanced MR, 434 with unenhanced MR, 450 with enhanced CT and 215 with unenhanced CT) were enrolled. AAEs were significantly higher (P unenhanced MR [39 (9.0%)] and CT [5 (2.3%)] groups. Dizziness was significantly [19 (7.3%), (P frequent in the enhanced MR. The same AAEs were reported in both contrast groups and control groups. Conclusion: AAEs which are mainly considered to be caused by the contrast medium are also experienced by patients undergoing CT or MR without contrast. Enhanced MR is correlated with more reactions than unenhanced MR and enhanced CT. Dizziness was reported more frequently after MR than CT, both with and without contrast;more patients were CNS examined with MR and with CT.展开更多
Purpose:To assess the iodine concentration of hepatic alveolar echinococcosis(HAE)using spectral computed tomography(CT)with comparison of[^(18)F]fluorodeoxyglucose positron-emission tomography(^(18)F-FDG PET),and to ...Purpose:To assess the iodine concentration of hepatic alveolar echinococcosis(HAE)using spectral computed tomography(CT)with comparison of[^(18)F]fluorodeoxyglucose positron-emission tomography(^(18)F-FDG PET),and to estimate the value of spectral CT for evaluation of HAE activity.Materials and methods:18 patients with histologically confirmed or clinically proved HAE underwent spectral CT and^(18)F-FDG PET examinations.After three-phase scanning,the quantitative iodine-based material decomposition images and optimal monochromatic image of spectral CT were reconstructed and iodine concentration(IC)was measured in different organizational structures.Results:^(18)F-FDG PET identified increased metabolic activity in the corresponding lesions in 13 patients(13/18,72.2%).The iodine concentration in marginal zone of lesion were significantly higher than in solid component of lesion and normal liver parenchyma during PVP and VP.The iodine value of edge tissue of the lesion and normal liver and iodine value of normal liver tissues showed statistically significant difference(P<0.001).There was correlation between IC and SUVmax in marginal zone of HAE lesion,it was highest during PVP(r=0.873,p<0.001).There was low correlation between CT values and SUVmax.Conclusion:There was good correlation between spectral CT and^(18)F-FDG PET.Spectral CT could be recommended as a more practical tool in the clinical routine.展开更多
基金National Key Research and Development Program of China,Grant/Award Number:2022YFB2405100National Natural Science Foundation of China,Grant/Award Number:22209015+1 种基金Scientific Research Foundation of Hunan Provincial Education Department,Grant/Award Number:21A0195100 Talented Team of Hunan Province,Grant/Award Number:[2016]91。
文摘Due to the high solubility,high reversibility,and low cost of iodide,iodine-based redox flow batteries(RFBs)are considered to have great potential for upscaling energy storage.However,their further development has been limited by the low capacity of I−as one-third of the I−is used to form I3−(I2I−)during the charging process.Herein,we have demonstrated that the pseudohalide ion,thiocyanate(SCN−),is a promising complexing agent for catholyte of iodinebased RFBs to free up the I−by forming iodine-thiocyanate ions([I2SCN]−)instead of I3−,unlocking the capacity of iodide.Applying this strategy,we have demonstrated iodine-based RFBs with full utilization of iodide to achieve high capacity and high energy density.Both the zinc/iodine RFB and polysulfide/iodine RFB with SCN−complex agent achieve their theoretical capacity of around 160 A h Lposolyte^(−1)(6.0MI−in catholyte).Therefore,the zinc/iodine RFB delivers a high energy density of 221.34Wh Lposolyte^(−1),and the polysulfide/iodine RFB achieves a highenergy density of 165.62Wh Lposolyte^(−1).It is believed that this effective catholyte engineering can be further generalized to other iodine-based RFBs,offering new opportunities to unlock the capacity of iodide and achieve high energy density for energy storage.
基金Johannes Fogs Fond Aase og Ejnar Danielsens Fond
文摘Aim: Investigating the incidence of non-renal acute adverse events (AAEs) in patients undergoing unenhanced or enhanced computed tomography (CT) or magnetic resonance (MR) (four groups) using the ac- tive interview-method. Methods: The imaging procedure followed the standards of the department. Furthermore, the iodine-based (nonionic monomer) and gadolinium-based (cyclic) contrast agent was the same as used for all other examinations in the department. All patients were interviewed for 72 hours after the MR or CT examination regarding occurrence of AAEs using a structured questionnaire. Results: A total of 1358 patients (259 with enhanced MR, 434 with unenhanced MR, 450 with enhanced CT and 215 with unenhanced CT) were enrolled. AAEs were significantly higher (P unenhanced MR [39 (9.0%)] and CT [5 (2.3%)] groups. Dizziness was significantly [19 (7.3%), (P frequent in the enhanced MR. The same AAEs were reported in both contrast groups and control groups. Conclusion: AAEs which are mainly considered to be caused by the contrast medium are also experienced by patients undergoing CT or MR without contrast. Enhanced MR is correlated with more reactions than unenhanced MR and enhanced CT. Dizziness was reported more frequently after MR than CT, both with and without contrast;more patients were CNS examined with MR and with CT.
文摘Purpose:To assess the iodine concentration of hepatic alveolar echinococcosis(HAE)using spectral computed tomography(CT)with comparison of[^(18)F]fluorodeoxyglucose positron-emission tomography(^(18)F-FDG PET),and to estimate the value of spectral CT for evaluation of HAE activity.Materials and methods:18 patients with histologically confirmed or clinically proved HAE underwent spectral CT and^(18)F-FDG PET examinations.After three-phase scanning,the quantitative iodine-based material decomposition images and optimal monochromatic image of spectral CT were reconstructed and iodine concentration(IC)was measured in different organizational structures.Results:^(18)F-FDG PET identified increased metabolic activity in the corresponding lesions in 13 patients(13/18,72.2%).The iodine concentration in marginal zone of lesion were significantly higher than in solid component of lesion and normal liver parenchyma during PVP and VP.The iodine value of edge tissue of the lesion and normal liver and iodine value of normal liver tissues showed statistically significant difference(P<0.001).There was correlation between IC and SUVmax in marginal zone of HAE lesion,it was highest during PVP(r=0.873,p<0.001).There was low correlation between CT values and SUVmax.Conclusion:There was good correlation between spectral CT and^(18)F-FDG PET.Spectral CT could be recommended as a more practical tool in the clinical routine.
