目的分析机器人辅助经皮椎体成形术(PVP)对治疗骨质疏松性椎体压缩性骨折(OVCF)的临床疗效与安全性。方法2023年9月至2024年1月新疆医科大学第六附属医院脊柱外科行机器人辅助PVP的患者41例;其中男4例,女37例;BMI(23.8±4.0)kg/m^(...目的分析机器人辅助经皮椎体成形术(PVP)对治疗骨质疏松性椎体压缩性骨折(OVCF)的临床疗效与安全性。方法2023年9月至2024年1月新疆医科大学第六附属医院脊柱外科行机器人辅助PVP的患者41例;其中男4例,女37例;BMI(23.8±4.0)kg/m^(2);年龄(70.5±9.3)岁;病椎包括T10椎体3例、T11椎体5例、T12椎体6例、L1椎体13例、L2椎体7例、L3椎体3例、L4椎体4例。观察其骨水泥灌注量、透视次数、骨水泥渗漏率、手术时间、术后住院时间及其他并发症发生情况;同时对比机器人辅助组术前、术后椎体中线高度、Cobb角、ODI评分及疼痛视觉模拟评分(VAS)。结果机器人辅助PVP骨水泥渗漏率为7.3%(3/41),手术(穿刺及骨水泥推注)(31.9±4.7)min,透视(12.1±1.3)次,术后住院(3.2±0.8)d;41例患者均未发生术后感染及并发症。术后1 d VAS(2.0±0.8)分,Cobb角(8.9°±5.2°),均低于术前[(5.0±0.9)分、(12.6°±6.2°)]。术后1 d椎体中线高度(19.8±5.2)mm高于术前(16.6±5.3)mm,差异均有统计学意义(均P<0.05)。结论机器人辅助PVP治疗胸腰椎压缩性骨折是一种可行、有效、安全的方法,可获得满意的临床疗效。展开更多
In this paper,an intelligent reflecting surface(IRS)-and-unmanned aerial vehicle(UAV)-assisted two-way amplify-and-forward(AF)relay network in maritime Internet of Things(IoT)is proposed,where ship1(S1)and ship2(S2)ca...In this paper,an intelligent reflecting surface(IRS)-and-unmanned aerial vehicle(UAV)-assisted two-way amplify-and-forward(AF)relay network in maritime Internet of Things(IoT)is proposed,where ship1(S1)and ship2(S2)can be viewed as data collecting centers.To enhance the message exchange rate between S1 and S2,a problem of maximizing minimum rate is cast,where the variables,namely AF relay beamforming matrix and IRS phase shifts of two time slots,need to be optimized.To achieve a maximum rate,a low-complexity alternately iterative(AI)scheme based on zero forcing and successive convex approximation(LC-ZF-SCA)algorithm is presented.To obtain a significant rate enhancement,a high-performance AI method based on one step,semidefinite programming and penalty SCA(ONSSDP-PSCA)is proposed.Simulation results show that by the proposed LC-ZF-SCA and ONS-SDP-PSCA methods,the rate of the IRS-and-UAV-assisted AF relay network surpass those of with random phase and only AF relay networks.Moreover,ONS-SDP-PSCA perform better than LC-ZF-SCA in aspect of rate.展开更多
文摘目的分析机器人辅助经皮椎体成形术(PVP)对治疗骨质疏松性椎体压缩性骨折(OVCF)的临床疗效与安全性。方法2023年9月至2024年1月新疆医科大学第六附属医院脊柱外科行机器人辅助PVP的患者41例;其中男4例,女37例;BMI(23.8±4.0)kg/m^(2);年龄(70.5±9.3)岁;病椎包括T10椎体3例、T11椎体5例、T12椎体6例、L1椎体13例、L2椎体7例、L3椎体3例、L4椎体4例。观察其骨水泥灌注量、透视次数、骨水泥渗漏率、手术时间、术后住院时间及其他并发症发生情况;同时对比机器人辅助组术前、术后椎体中线高度、Cobb角、ODI评分及疼痛视觉模拟评分(VAS)。结果机器人辅助PVP骨水泥渗漏率为7.3%(3/41),手术(穿刺及骨水泥推注)(31.9±4.7)min,透视(12.1±1.3)次,术后住院(3.2±0.8)d;41例患者均未发生术后感染及并发症。术后1 d VAS(2.0±0.8)分,Cobb角(8.9°±5.2°),均低于术前[(5.0±0.9)分、(12.6°±6.2°)]。术后1 d椎体中线高度(19.8±5.2)mm高于术前(16.6±5.3)mm,差异均有统计学意义(均P<0.05)。结论机器人辅助PVP治疗胸腰椎压缩性骨折是一种可行、有效、安全的方法,可获得满意的临床疗效。
基金supported in part by the National Natural Science Foundation of China (Nos.U22A2002, and 62071234)the Hainan Province Science and Technology Special Fund (ZDKJ2021022)+1 种基金the Scientific Research Fund Project of Hainan University under Grant KYQD(ZR)-21008the Collaborative Innovation Center of Information Technology, Hainan University (XTCX2022XXC07)
文摘In this paper,an intelligent reflecting surface(IRS)-and-unmanned aerial vehicle(UAV)-assisted two-way amplify-and-forward(AF)relay network in maritime Internet of Things(IoT)is proposed,where ship1(S1)and ship2(S2)can be viewed as data collecting centers.To enhance the message exchange rate between S1 and S2,a problem of maximizing minimum rate is cast,where the variables,namely AF relay beamforming matrix and IRS phase shifts of two time slots,need to be optimized.To achieve a maximum rate,a low-complexity alternately iterative(AI)scheme based on zero forcing and successive convex approximation(LC-ZF-SCA)algorithm is presented.To obtain a significant rate enhancement,a high-performance AI method based on one step,semidefinite programming and penalty SCA(ONSSDP-PSCA)is proposed.Simulation results show that by the proposed LC-ZF-SCA and ONS-SDP-PSCA methods,the rate of the IRS-and-UAV-assisted AF relay network surpass those of with random phase and only AF relay networks.Moreover,ONS-SDP-PSCA perform better than LC-ZF-SCA in aspect of rate.
