基于思维导图的“医学影像物理学”教学实践研究

“医学影像物理学”是医药院校医学影像学专业的一门专业基础课,学生普遍反映课程内容繁多且难以融会贯通。为提高“医学影像物理学”课程的教学质量,通过分析“医学影像物理学”的课程特点及学生特点,在中医药院校“医学影像物理学”的授课中应用思维导图法,融合引导式教学方法,分别从课前导学、章末总结、对比归纳学习易混淆概念等维度进行课程教学设计。结果表明,思维导图引导式教学模式,可以帮助学生提高自主学习积极性,锻炼知识整合和逻辑思维能力,学生对课程设计整体评价较高,对其他影像学专业课程教学具有一定的参考意义。     

Digital body preservation: Technique and applications

High-fidelity anatomical models can be produced with three-dimensional (3D) scanning techniques and as such be digitally preserved, archived, and subsequently rendered through various media. Here, a novel methodology—digital body preservation—is presented for combining and matching scan geometry with radiographic imaging. The technique encompasses joining layers of 3D surface scans in an anatomical correct spatial relationship. To do so, a computed tomography (CT) volume is used as template to join and merge different surface scan geometries by means of nonrigid registration into a single environment. In addition, the use and applicability of the generated 3D models in digital learning modalities is presented. Finally, as computational expense is usually the main bottleneck in extended 3D applications, the influence of mesh simplification in combination with texture mapping on the quality of 3D models was investigated. The physical fidelity of the simplified meshes was evaluated in relation to their resolution and with respect to key anatomical features. Large- and medium-scale features were well preserved despite extensive 3D mesh simplification. Subtle fine-scale features, particular in curved areas demonstrated the major limitation to extensive mesh size reduction. Depending on the local topography, workable mesh sizes ranging from 10% to 3% of the original size could be obtained, making them usable in various learning applications and environments.     

基于P-范分布下的三维激光点位误差分布检验

目前,在对三维激光点位误差模型进行推导的过程中,都是假设三维激光点位误差是服从正态分布的,而由于三维激光点位误差源与传统测量仪器中的误差源不同,同时外界环境对激光点位误差的影响也不相同,因此,不能直接断定点位误差服从正态分布,需要对其理论分析及数据统计分析验证。针对三维激光点位误差分布状况,本文对激光点位误差模型进行了推导,并通过大量数据统计分析验证了激光点位误差服从的分布状况。     

高密度电法勘探贵州煤矿采空区积水的制约因素分析

贵州因煤炭开采形成大面积的采空区,很多采空区积水水患灾害严重。高密度电法是贵州煤矿采空区积水勘探最常用方法,通过分析其制约因素,总结该种勘探技术方法的工程特征,对高密度电法在勘探贵州煤矿采空区积水有一定的指导意义。     

企业资产负债表的编制及审核探究

为了提高编制资产负债表的正确性,规避审计风险,为相关利害关系人提供真实可靠的会计报表信息。针对企业资产负债表出现的错弊,通过剖析、归纳和整理,指出编制资产负债表应掌握的要点和常用的审核方法。通过分析研究,企业编制正确的资产负债表,可以提升审核效用,进而做到查错防弊,并为提高资产负债表的会计信息质量奠定基础。     

CBL模式在犬泌尿系统疾病影像诊断教学中的应用研究

兽医影像学是临床兽医师诊疗疾病所需要的重要课程。为激发学生的学习兴趣,培养学生的读片能力,提高教学质量,将基于病例的学习模式引入影像学的教学中,观察该方法对教学的影响。实践证实,该模式有效提高了学生的学习兴趣和教学质量,值得在临床教学中进行推广。     

Running-induced patellofemoral pain fluctuates with changes in patella water content

Abstract

Although increased bone water content resulting from repetitive patellofemoral joint loading has been suggested to be a possible mechanism underlying patellofemoral pain (PFP), there is little data to support this mechanism. The purpose of the current study was to determine whether running results in increases in patella water content and pain and whether 48 hours of rest reduces patella water content and pain to pre-running levels. Ten female runners with a diagnosis of PFP (mean age 25.1 years) participated. Patella water content was quantified using a chemical-shift-encoded water-fat magnetic resonance imaging (MRI) protocol. The visual analog scale (VAS) was used to quantify subjects' pain levels. MRI and pain data were obtained prior to running, immediately following a 40-minute running session, and 48 hours post-running. Pain and patella water content were compared among the 3 time points using one-way ANOVA's with repeated measures. Immediately post-running, persons with PFP reported significant increases in pain and exhibited elevated patella water content. Pain and patella water content decreased to pre-running levels following 48 hours of rest. Our findings suggest that transient changes in patella water content associated with running may, in part, contribute to patellofemoral symptoms.     

第5届全国大运会田径比赛电子设备配置情况综述

本文通过对第五届全国大学生运动会田径比赛电子设备配置使用情况的总结分析，找出本次大运会与国内１类运动会和国际大型运动会的差距并对今后陕西省办好更高水平的大型运动会，特别是办好１９９９年第四届全国城市运动会提出了建设性意见     

蛋白质芯片技术及生物医学应用

蛋白质芯片技术是一种新型蛋白质分析技术。文章介绍了研究它的目的和意义,重点介绍它的研制过程和研究内容以及生物医学应用。