越来越多的临床研究提示,消除肿瘤局部转移灶对改善患者的生存质量和延长生存时间都有着重要意义。2009年美国Timmerman教授发表在《临床医师肿瘤杂志》(CA Cancer J Clin)的1篇综述文章,总结了转移瘤局部手术、射频及放射治疗的现状,...越来越多的临床研究提示,消除肿瘤局部转移灶对改善患者的生存质量和延长生存时间都有着重要意义。2009年美国Timmerman教授发表在《临床医师肿瘤杂志》(CA Cancer J Clin)的1篇综述文章,总结了转移瘤局部手术、射频及放射治疗的现状,并重点阐述了肝、肺转移瘤局部治疗效果的循证医学证据,文章面面俱到,有理有据,堪称经典,为转移瘤的局部治疗指明了方向。然而精读此文,我们发现该综述在肺转移瘤射频治疗并发症及危险因素的描述中存在一些问题,值得商榷。为此我们提出了自己的见解。在与国外同行切磋的过程中,我们对肺部肿瘤的射频治疗有了更深一步的认识。展开更多
In order to measure the parameters of flight rocket by using radar,rocket impact point was estimated accurately for rocket trajectory correction.The Kalman filter with adaptive filter gain matrix was adopted.According...In order to measure the parameters of flight rocket by using radar,rocket impact point was estimated accurately for rocket trajectory correction.The Kalman filter with adaptive filter gain matrix was adopted.According to the particle trajectory model,the adaptive Kalman filter trajectory model was constructed for removing and filtering the outliers of the parameters during a section of flight detected by three-dimensional data radar and the rocket impact point was extrapolated.The results of numerical simulation show that the outliers and noise in trajectory measurement signal can be removed effectively by using the adaptive Kalman filter and the filter variance can converge in a short period of time.Based on the relation of filtering time and impact point estimation error,choosing the filtering time of 8-10 scan get the minimum estimation error of impact point.展开更多
文摘越来越多的临床研究提示,消除肿瘤局部转移灶对改善患者的生存质量和延长生存时间都有着重要意义。2009年美国Timmerman教授发表在《临床医师肿瘤杂志》(CA Cancer J Clin)的1篇综述文章,总结了转移瘤局部手术、射频及放射治疗的现状,并重点阐述了肝、肺转移瘤局部治疗效果的循证医学证据,文章面面俱到,有理有据,堪称经典,为转移瘤的局部治疗指明了方向。然而精读此文,我们发现该综述在肺转移瘤射频治疗并发症及危险因素的描述中存在一些问题,值得商榷。为此我们提出了自己的见解。在与国外同行切磋的过程中,我们对肺部肿瘤的射频治疗有了更深一步的认识。
文摘In order to measure the parameters of flight rocket by using radar,rocket impact point was estimated accurately for rocket trajectory correction.The Kalman filter with adaptive filter gain matrix was adopted.According to the particle trajectory model,the adaptive Kalman filter trajectory model was constructed for removing and filtering the outliers of the parameters during a section of flight detected by three-dimensional data radar and the rocket impact point was extrapolated.The results of numerical simulation show that the outliers and noise in trajectory measurement signal can be removed effectively by using the adaptive Kalman filter and the filter variance can converge in a short period of time.Based on the relation of filtering time and impact point estimation error,choosing the filtering time of 8-10 scan get the minimum estimation error of impact point.
