目的探讨鼻中隔偏曲(NSD)对患者中鼻甲(MT)位置的影响及其对鼻中隔成形术的临床意义。方法对2018年2月—2019年12月因NSD行鼻中隔成形术联合MT手术的100例患者的鼻窦CT进行回顾性分析。利用GE医疗图像系统(Centricity Enterprise Web 3...
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目的探讨鼻中隔偏曲(NSD)对患者中鼻甲(MT)位置的影响及其对鼻中隔成形术的临床意义。方法对2018年2月—2019年12月因NSD行鼻中隔成形术联合MT手术的100例患者的鼻窦CT进行回顾性分析。利用GE医疗图像系统(Centricity Enterprise Web 3)测量NSD的偏曲程度和鼻腔凹、凸侧MT的结构指标,分析MT结构指标与NSD的偏曲程度之间的关系。结果鼻腔凸侧MT宽度(4.56±1.55)mm显著小于凹侧(7.01±1.75)mm(P<0.01),凸侧MT内侧缘距离中线的距离(5.04±1.37)mm显著大于凹侧(1.48±1.50)mm(P<0.01)。MT宽度与NSD的偏曲程度在凹侧呈正相关(r=0.245;P<0.05),在凸侧呈负相关(r=-0.420;P<0.01)。MT到中线的距离与NSD的偏曲程度在凹侧呈负相关(r=-0.430;P<0.01),在凸侧呈正相关(r=0.549;P<0.01)。结论NSD患者凹侧MT代偿性肥大并向中线移位,凸侧MT适应性缩小并远离中线。在鼻中隔成形术中,对包括泡状中鼻甲(CB)在内的肥大MT有必要给予更多关注。
Recently, heat treatment in the range of 250 degrees C-500 degrees C has been attempted with the aim of improving the quality factor (Q) of superconducting radio-frequency (SRF) cavities worldwide. Herein, medium-temp...
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Recently, heat treatment in the range of 250 degrees C-500 degrees C has been attempted with the aim of improving the quality factor (Q) of superconducting radio-frequency (SRF) cavities worldwide. Herein, medium-temperature (mid-T) furnace baking experiments were conducted at the Institute of High Energy Physics to obtain higher Q values. First, 1.3 GHz 1-cell cavities received mid-T furnace baking at different temperatures, resulting in not only the improvement of Q but also an anti-Q-slope behavior. Furthermore, mid-T furnace baking was applied to six 1.3 GHz 9-cell cavities, all of which indicated higher Q and anti-Q-slope behavior. The average Q was 3.8 x 10(10) at 16 MV m(-1). The maximum gradients of the 9-cell cavities were 22.7-26.5 MV m(-1). Finally, the mid-T furnace baked 1.3 GHz 9-cell cavities were welded with helium vessel, with no degradation in the vertical tests. In addition, the mid-T furnace baking process was simplified in comparison with European X-ray Free Electron Laser and Linear Coherent Light Source because of the cancellation of light electro-polishing. This simplification is beneficial in the mass production of SRF cavities with high Q, which are widely adopted in free electron lasers and high-energy colliders.
Background. Until now, there has been no ideal embolization agent for hemorrhage in interventional treatment. In this study, the thrombin was encapsulated in alginate calcium microsphere using electrostatic droplet te...
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Background. Until now, there has been no ideal embolization agent for hemorrhage in interventional treatment. In this study, the thrombin was encapsulated in alginate calcium microsphere using electrostatic droplet technique to produce new embolization agent: thrombin loaded alginate calcium microspheres (TACMs). Objectives. The present work was to evaluate the biocompatibility and hemostatic efficiency of TACMs. Methods. Cell cytotoxicity, hemolysis, and superselective embolization of dog liver arteries were performed to investigate the biocompatibility of TACMs. To clarify the embolic effect of TACMs mixed thrombus in vivo, hepatic artery injury animal model of 6 beagles was established and transcatheter artery embolization for bleeding was performed. Results. Coculture with VECs revealed the noncytotoxicity of TACMs, and the hemolysis experiment was negligible. Moreover, the histological study of TACMs in liver blood vessel showed signs of a slight inflammatory reaction. The results of transcatheter application of TACMs mixed thrombus for bleeding showed that the blood flow was shut down completely after the TACMs mixed thrombus was delivered and the postprocedural survival rate of animal models at 12 weeks was 100%. Conclusions. With their good biocompatibility and superior hemostatic efficiency, TACMs might be a promising new hemostatic agent with a wide range of potential applications.
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