体外冲击波碎石成功率密度分布的能量效应

发布时间：2018-04-07 17:51

  本文选题：体外冲击波碎石　切入点：ESWL　出处：《高电压技术》2017年08期

【摘要】：体外冲击波碎石(ESWL)是一种无创治疗泌尿系结石的医疗技术,临床上有95%以上的成功率,冲击波能量是这种医疗技术成功的关键因素。为此,阐述了冲击波的形成、传播、聚焦,冲击波发生器的电场能量和碎石原理等,然后从ESWL成功率密度分布中分析冲击波最佳能量。ESWL病例入选条件是门诊输尿管结石患者,年龄在18~83岁之间,左、右单侧或双侧输尿管具有放射影像学结石特征,ESWL数据完整,并且输尿管结石ESWL成功者。通过建立能量的ESWL成功率密度分布函数,得到其数学期望和均方差,从而获得ESWL成功的最佳能量。研究结果表明:从入选的5 747例ESWL病例中,获得ESWL成功率密度分布函数的数学期望为535 m J/mm~2,均方差为157 m J/mm~2,最佳能量在418~732 m J/mm~2范围内;该最佳能量可以通过能级来确定,能级一般分为Ⅰ级(约10 m J/mm~2)、Ⅱ级(20~40 m J/mm~2)、Ⅲ级(30~300 m J/mm~2)、Ⅳ级(400~1 200 m J/mm~2);可以根据结石的大小和密度来选择能级。该结果有助于临床医师根据实际情况选择能量,以提高ESWL成功率。
[Abstract]:Extracorporeal shock wave lithotripsy (ESWL) is a non-invasive medical technique for the treatment of urolithiasis with a clinical success rate of more than 95%. Shock wave energy is the key factor for the success of this medical technique.Therefore, the formation, propagation, focus, electric field energy of shock wave generator and the principle of lithotripsy were expounded. The optimal energy of shock wave was analyzed from the density distribution of ESWL success rate. The selected condition of the case was the outpatient patients with ureterolithiasis.The left, right and unilateral ureters had radiographic calculi. The data of ESWL were complete and the ureteral calculi were successful in ESWL.By establishing the density distribution function of ESWL success rate of energy, the mathematical expectation and mean square deviation are obtained, and the optimum energy of ESWL success is obtained.The results showed that the mathematical expectation of the density distribution function of ESWL success rate was 535mJ / mm2, the mean square deviation was 157mJ / mm2, and the optimum energy was within 418732m J/mm~2, which could be determined by the energy level.The energy levels are generally divided into 鈪，

本文编号：1720228