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1.
虚拟现实技术在护理实验教学中的运用   总被引:3,自引:0,他引:3  
虚拟现实系统是一种在计算机上实现的综合立体图形、自然交互等技术,以营造高度逼真的虚拟环境的应用系统。它因具有多感知性、沉浸感、交互性和构想性而能跨越时间和空间,从而满足大量学生同时进行有创性实验的要求。介绍了虚拟现实技术的概念、特点及其在护理实验教学中的运用,目的是通过运用虚拟现实技术来弥补传统护理实验教学的不足,从而提高护理实验教学质量。  相似文献
2.
应用虚拟现实技术对室间隔缺损三维超声诊断的实验研究   总被引:2,自引:2,他引:1  
目的应用虚拟现实(VR)技术,实现室间隔缺损(VSD)的心内三维超声虚拟现实诊断.方法建立10个新鲜离体猪心VSD模型,采集三维超声图像进行三维重建和可视化,建立心内三维超声VR系统.结果应用VR技术后,显示缺损的形态、部位、数目和邻近解剖结构间的关系,均与与解剖后观察结果一致.测量三维重建并虚拟显示后的VSD面积、最大径和最小径,结果测得数据与实测值高度相关(r>0.95,P<0.01).结论 VR为小儿先天性心脏病三维超声诊断提供了一种新方法.  相似文献
3.
动态心内三维超声虚拟现实诊断方法研究   总被引:1,自引:1,他引:0  
目的应用虚拟现实(VR)技术,通过临床初步应用研究,评价小儿先天性心脏病心内三维虚拟现实诊断方法的可行性.方法正常小儿20例、先天性心脏病患儿30例(ASD 10例、VSD 9例、TOF 11例),分别进行全心三维图像重建,实现动态三维超声虚拟现实显示,对虚拟心内结构进行三维空间定位观察,显示心内结构异常者与心导管术后或手术后诊断或三维超声诊断进行比较,确定该方法的空间定位及空间结构关系判断的准确性.结果动态心内三维超声虚拟显示技术能正确显示正常及先天性心脏病患儿的心内结构,诊断心内结构异常者与心导管术后或手术后诊断或三维超声诊断一致.结论动态心内三维超声虚拟现实技术为小儿先天性心脏病无创性三维超声诊断提供了一种新方法.  相似文献
4.
目的:初步观察虚拟厨房上肢康复训练结合常规作业治疗对脑卒中恢复期患者偏瘫上肢功能康复的临床疗效.方法:将33例脑卒中恢复期偏瘫上肢功能障碍的患者随机分为治疗组(16例)和对照组(17例).对照组接受常规作业治疗每次40min,每日1次,每周5次,共3周.治疗组接受常规作业治疗和虚拟厨房上肢康复训练各20min,每次共40min,每日1次,每周5次,共3周.其余康复治疗如运动疗法和日常生活活动训练等两组均相同.两组患者分别于治疗前、治疗后予以FMA上肢部分(FMA-UE)、MAS上肢部分(MAS-UE)和MBI评定,比较两组的疗效.结果:两组患者治疗后FMA-UE、MAS-UE及MBI的评分均较治疗前提高,治疗前、后各量表的评分差异具有显著性(P< 0.05);与对照组相比,治疗组患者FMA-UE、MBI的评分提高幅度更大(P<0.05).结论:虚拟厨房上肢康复训练结合常规康复作业治疗能更好地改善脑卒中恢复期患者偏瘫上肢的运动功能,更有效地提高患者日常生活活动能力.  相似文献
5.
基于虚拟现实的女性盆腔可视化及手术仿真   总被引:1,自引:0,他引:1       下载免费PDF全文
目的 实现基于虚拟现实的女性盆腔可视化及手术仿真.方法 选取中国可视人体数据集的盆腔部分作为数据源,对盆腔中的重要器官进行分割处理,并在此基础上进行基于VRML的盆腔可视化以及基于Dextrobeam系统的虚拟手术仿真研究.结果 成功构建了基于虚拟现实的女性盆腔网络化模型和手术模型,可清晰显示各盆腔器官结构,并进行手术仿真操作.结论 虚拟现实技术的运用可有效地推动解剖教学与手术设计,为医学教育与培训提供逼真的模拟实践平台.  相似文献
6.
Until recently, supportive care for cancer patients in Japan was not well organized. Not too many oncologists paid attention to the improvement of daily life of patients with advanced or terminal cancer. Oncological staffs such as doctors, nurses, psychologists, and pharmacists at hospitals in Japan did not really cooperate efficiently. Recently, however, we have begun to develop and to expand activities for supportive care of cancer patients using new concepts of treatment. At the National Cancer Center in Japan an effort is being made to expand activities in PCU, the application of Chinese acupuncture for pain relief, and the development of a virtual reality technique. A system to connect cancer centers has been establishes and is now being expanded to facilitate a new database on up-todate cancer information. We have already started holding multi-institutional medical teleconferences, telepathology and teleradiology on a weekly basis, covering nine cancer centers throughout Japan.  相似文献
7.
We present a suite of neurosurgery supporting tools developed around (i) the Virtual Workbench, a productive environment for the control of 3-D data, in which delicate work can be performed for hours on end without strain, and (ii) the Electronic Brain Atlas, integrating the major print brain atlases in day-to-day clinical use. We describe in detail the Brain Bench, a surgical planning system for stereotactic frame neurosurgery. Its objective is to prepare faster plans; have a better and more accurate choice of target points; improve the avoidance of sensitive structures; have fewer sub-optimal frame attachments and speedier, more effective planning and training. If validated by a clinical study now under way, this will improve medical efficacy and reduce costs.  相似文献
8.
Current training methods in fiberoptic intubation entail a trial and error process in which trainees acquire skills by practicing this technique in mannequins or patients. These training methods are not efficient and may expose patients to unnecessary instrumentation. An interactive software program is described which uses Director, a commercially available multimedia authoring tool, to (1) familiarize trainees with video images of the upper airway, (2) permit operator controlled progress through a normal fiberoptic intubation, (3) simultaneously display (side by side) two-dimensional or three-dimensional computer tomographic images with a fiberscope in place and the corresponding endoscopic video images, and (4) demonstrate some of the obstacles which occur in clinical practice (e.g. white-out and saliva). The intent of this package is to simulate fiberoptic intubation techniques as well as help one create a mental image of the path a fiberscope takes within the lumen of the upper airway. The potential for improving operator immersion (virtual reality) by using a more sophisticated input device is discussed.  相似文献
9.
Previous studies on modulation of anxiety, pain and unpleasantness have documented a positive effect of video glasses (I-Glasses, Virtual i-O, Seattle, USA) on the perceived pain and unpleasantness under different laboratory and clinical conditions. The aim of this study was to evaluate whether distraction induced by video glasses also had an effect on the perceived intensity of pain and unpleasantness during dental treatment. Pain and unpleasantness was evoked by the preparation (drilling) of a minor dental cavity (class I). Twenty-three patients (17 female and six male, age range 20-49 years) with a need for an occlusal dental restoration in two homologous teeth participated in the study. In this split-mouth design, the patient received the dental treatment wearing 3D video glasses and without video glasses (control situation) in a randomized order. The tooth cavities were prepared in accordance with conventional techniques after mounting the video glasses. The patient rated the intensity of pain and unpleasantness on 100 mm visual analogue scales (VASs) after preparation of the first cavity; immediately after, the opposite tooth was prepared and again the volunteer rated the intensity of pain and unpleasantness. The cavities were then filled using a routine composite technique. Eventually, the patient indicated whether she would prefer video glasses or not if she were to have another filling and what the expectations of the effect had been. Differences in VAS ratings in the video and control situation were tested by Student's t-test. There was no statistically significant effect on the perceived pain (p=0.90) or unpleasantness (p=0.39), but the majority (74%) of the patients would still prefer to wear video glasses if they were to have another dental filling, and 73% had expected a positive effect of the video glasses. These findings suggest that perceived intensity of dental pain is resistant to a simple distraction technique.  相似文献
10.
OBJECTIVE: To evaluate construct and content validity as well as learners' perceptions of CathSim, a virtual reality intravenous (IV) insertion simulator. METHODS: A prospective cohort study design was employed to determine construct validity, and a participant survey was used to ascertain content validity as well as user perceptions of CathSim. Forty-one attendings, residents, and medical students in emergency medicine and anesthesia attempted five simulated IV insertions on CathSim. Subject performances were scored by the computer, and subject perceptions of the simulator were measured using a Likert scale questionnaire (1 = worst rating; 5 = best rating). The subjects were divided into three groups (novices, intermediates, and experts) based on previous IV experience. To determine construct validity, performances of the three groups were compared using one-way analysis of variance (ANOVA). To determine content validity, the experts' perceptions of the simulator's realism and usefulness were assessed. Study subjects' perceptions of the simulator's ease of use and overall appeal were analyzed. RESULTS: The experts scored better than the others in five of nine scoring parameters (p < 0.05). The experts rated the realism of CathSim's four major simulation components at 3.85, 3.46, 3.69, and 3.46; the overall realism of CathSim at 2.93; and its utility for medical student training at 4.57. The simulator's ease of use was rated at 2.34 by all subjects. Novices reported a score of 4.59 regarding their likelihood to use the simulator. CONCLUSIONS: CathSim demonstrated construct validity in five of nine internal scoring parameters and was judged to be adequately realistic and highly useful for medical student training. Despite being difficult to learn to use, it remained appealing to the users, especially the novices.  相似文献
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