Single pixel imaging based on semi-continuous wavelet transform

Single pixel imaging is a novel imaging technique,and it becomes a focus of research in recent years due to its advantages such as high lateral resolution and high robustness to noise.Imaging speed is one of the critical shortcomings,which limits the further development and applications of this technique.In this paper,we focus on the issues of imaging efficiency of a single pixel imaging system.We propose semi-continuous wavelet transform(SCWT)protocol and introduce the protocol into the single pixel imaging system.The proposed protocol is something between continuous wavelet transform and discrete wavelet transform,which allows the usage of those smooth(usually non-orthogonal,and they have advantages in representing smooth signals compressively,which can improve the imaging speed of single pixel imaging)wavelets and with limited numbers of measurements.The proposed imaging scheme is studied,and verified by simulations and experiments.Furthermore,a comparison between our proposed scheme and existing imaging schemes are given.According to the results,the proposed SCWT scheme is proved to be effective in reconstructing a image compressively.

Effect of Intensive Nursing on the Incidence of Thrombosis in Patients Undergoing PICC Line Placement

Objective:To explore the effect of intensive nursing on the incidence of thrombosis in patients undergoing PICC line placement.Methods:A total of 50 patients with tumor who underwent PICC line placement in Jiangsu Zhenjiang First People’s Hospital(from January 2019 to January 2020)were randomly selected for this research.According to the random number table method,they were divided into two groups:group A(25 cases)for routine nursing and group B(25 cases)for intensive nursing.The incidence of thrombosis,coagulation indices,quality of life,and nursing satisfaction were compared between the two groups.Results:The incidence of thrombosis of group B was lower than that of group A,and the coagulation indices,quality of life,as well as the nursing satisfaction of group B were higher than those of group A(P<0.05).Conclusion:Intensive nursing can effectively improve the coagulation,reduce thrombosis,and improve the quality of life of patients.The clinical application effect is remarkable,and it should be popularized.

磁控胶嚢胃镜与传统胃镜对儿童胃及十二指肠检查的对比分析

目的探讨磁控胶嚢胃镜(magnetically controlled capsule gastroscopy,MCCG)在儿童胃、十二指肠检查中的临床应用价值、安全性及与传统胃镜间的差异。方法回顾性分析2020年3月—2022年3月期间在上海市儿童医院门诊或住院的腹痛伴幽门螺杆菌感染的160例8~16岁患儿临床资料。患儿根据胃镜检查方法不同分为MCCG检查组及传统胃镜检查组各80例。观察分析两组患儿上消化道病变的检出情况、检查时间、耐受度及安全性。结果两组患儿分别顺利完成MCCG检查79例及传统胃镜检查78例,病变检出率两组比较,食管[1.3%(1/79)比1.3%(1/78),χ^(2)=0.000,P>0.999]、胃[87.3%(69/79)比91.0%(71/78),χ^(2)=0.552,P=0.327]、十二指肠[15.2%(12/79)比19.2%(15/78),χ^(2)=0.450,P=0.533],组间差异无统计学意义。MCCG组与传统胃镜组检查时间比较差异有统计学意义[72.0(41.0,109.5)min比6.0(4.3,7.0)min,U=24,P<0.001]。两组患儿均无不良事件发生。结论MCCG对于胃部及十二指肠疾病的检出率与传统胃镜无明显差异,且安全、稳定,可作为诊断儿童胃及十二指肠疾病的检查工具。