重症患者CT增强检查的护理分析

目的探讨在重症患者CT增强检查过程中加强护理干预的效果。方法选取2013年1月至2014年1月我院行CT增强检查的128例重症患者的临床资料进行归纳整理,分析检查过程中患者的不良反应发生情况及CT增强检查结果。结果除1例患者因气喘、憋闷,未能完成增强检查外,127例患者均顺利完成增强检查。结论在重症患者CT增强检查的过程中加强护理干预,可有效预防意外事故的发生,保证检查顺利进行。     

Grid analysis for sales supervision

Falling to recognize the unique need and desire of salespeople, the sales manager tends to allocate supervisory time according to the amount of his or her past selling experience. This time allocation results in either the excessive or insufficient supervision of sales personnel. This article describes a process of arriving at a more optimum allocation of supervisory time.     

一种快速的扇束CT滤波反投影重建算法

提出了一种用于扇束CT(计算机断层扫描)重建的快速滤波反投影算法.这种算法是传统标准滤波反投影(FBP)重建算法的加速形式,主要通过减少投影数量然后重建子图像来实现.实验结果表明:对于一幅512×512图像,这种算法可以将重建过程加速40倍以上,并且不会引入明显的图像误差.这种算法也适应于多层螺旋三维重建,并且可以延伸用于三维锥形重建.     

The impact of public investment in medical imaging technology: an interagency collaboration in evaluation

The Canada Foundation for Innovation (CFI) and the Canadian Institutes of Health Research (CIHR) allied to analyze the impact of their investments in medical imaging research. The CFI funds capital and operating programs for research infrastructure, and CIHR's mandate concentrates its funding on research activity. It happens that CIHR-funded research consumes CFI-funded infrastructure as an input in the innovation process. Apart from a few partnered programs, by design there is no coordination between CFI and CIHR funding decisions. Together, these agencies invested $916 million over a 14-year-period. In this paper, we evaluate the economic and health benefits from advancements in one funded area, namely computed tomography perfusion (CTP). CTP is an imaging technique that uses computed tomography to measure blood flow in organs and tissues. It is mostly used to assess acute ischemic stroke. The net social benefits attributable to these investments are substantially positive: the benefit-to-cost ratio is estimated to be between 6.66-to-1 and 9.99-to-1. We review how public investments from multiple funders comingle in the innovation process to deliver social value and improved health outcomes.     

基于预约策略的医院CT设备使用优化研究

预约检查是对有限的医疗检查资源的一种调度优化.以攀枝花市A医院CT检查为例,通过实地调研,统计CT设备的服务能力,门诊患者,住院患者和急诊患者的平均到达率,接受患者的单位检查收益和拒绝患者的单位检查损失.通过调整预约策略使有限的资源设备产生更多的收益,并运用仿真模拟不同预约策略下的收益效果.研究结果对医院重要设备的预约...     

Wizards and Champions: The Kingdom of New Venture Management

We have learned recently that the stories of King Arthur and his Round Table may be more fact than fable. There is certainly more fact than fable in the story told here by Irving Calish and Donald Gamache. They deal with the realities of managing new ventures.     

探讨多层螺旋CT对急性结肠出血诊断的应用价值

目的探讨多层螺旋CT对急性结肠出血诊断的应用价值。方法对9例急性结肠出血患者进行多层螺旋CT检查,同时结合相关文献进行回顾性分析。结果在9例患者中,多层螺旋CT确诊出血部位7例,出血显示率77.8%。2例多层螺旋CT未发现出血灶及异常。结论多层螺旋CT对急性结肠出血具有重要的临床应用价值。     

边缘检测应用问题研究

工业CT是一种先进的无损检测技术,近年来,从定性向定量测量发展是其的一个重要研究方向,且已取得了很大进展。然而,目前国内外工业CT图像测量大都还依赖于手工进行,这样不仅在可重复性和精确度上存在着很大问题,而且越来越无法适应于大批量的图像处理工作。因此,笔者针对手工测量存在的某些问题,结合工业CT图像的自身特点提出了一种基于边缘提取的自动测量方法。     

脑静脉和静脉窦血栓形成的影像学研究现状

本文主要探讨了脑静脉和静脉窦血栓形成的影像学研究现状,论述了脑静脉系统血栓形成的解剖基础以及CVST的影像学检查。     

两种基于投影数据恢复的低剂量CT重建方法比较

目的:低剂量CT重建已成为CT成像的研究热点,针对低剂量CT成像,文章对两种基于投影数据恢复的低剂量CT重建方法进行了讨论比较。材料与方法:这两种方法分别为基于投影数据非单调性全变分最小恢复的低剂量CT重建方法和基于投影数据惩罚加权最小二乘恢复的低剂量CT重建方法。我们通过数字体模仿真实验对两种方法分别进行了定性和定量比较分析。结果:实验结果表明,两种方法均能有效去除噪声、抑制伪影、提高低剂量CT重建图像质量。结论:重建时间方面,基于投影数据非单调性全变分最小恢复的低剂量CT重建方法更有优势。