不同对比剂在肝细胞癌患者CT增强扫描中效果比较

目的：对国产离子型对比剂泛影葡胺与进口非离子型对比剂优雅显在肝细胞癌（HCC）患者螺旋CT增强扫描中效果比较。方法：对198例HCC患者进行肝脏螺旋CT（SCT）三期增强扫描，其中105例选用60％泛影胺（含1292g／L），93例选用优雅显（1300g/L）。观察2种对比剂的不良反应及CT影像质量。结果：泛影葡胺组中有3例（2．9％）出现不良反应，其中轻度2例（1．9％），中度1例（1．0％）；优维显组有1例（1．1％）出现轻度不良反应。2组无重度不良反应与死亡发生（P＞0．05）。影像质量2组近似。结论：国产离子型对比剂对于无高危因素的人群安全可靠，并可获得质量满意的螺旋CT增强图像，是诊断HCC的有效对比剂。     

Clinical informatics and the dental curriculum

The origins of informatics lie in the development of computers and data processing techniques since the 1950s. The subsequent application of these to the practice of healthcare continues to the present day, so that information technology now holds the potential to revolutionise healthcare through more rapid and efficient management of an ever increasing quantity of clinical information. In dentistry, no less than in medicine, electronic systems can make an extremely valuable contribution to clinical practice. For these systems to be clinically useful, however, they need to be properly understood by clinicians. This review paper outlines the scope of clinical informatics and argues that a grounding in clinical informatics is now essential for today's undergraduates to equip them to meet the challenge of practice in the 21st century.     

IL-2活性单位测定的微机实现

目的探讨白细胞介素－２活性单位的测定，编程在微机上实现。方法以生物学方法检测白细胞介素－２的活性单位，在微机上运行该程序。结果使用该程序快速、简便、误差小、效果良好。结论该程序同样适用于其它生物制品的测定。     

计算机管理在规范护理技术训练中的应用

本系统软件由4个功能模块组成，能贮存大量的人事技术档案、护理技术训练信息，快遮检出各训练阶段及终末数据，并能图、表、字并茂，打印所需图表和数据信息。解决了既往技术训练资料保存不全、训练结果查询麻烦、训练评定人为因素多等问题．提高了训练质量和达标率，创新了护理技术训练管理模式，适用于各类型医院护理技术训练管理。     

Marginal bone level buccal to mandibular molars in digital radiographs from charge-coupled device and storage phosphor systems

The aim of this in vitro study was to compare bone loss measurements in the furcation area of mandibular molars in digital radiographs from a CCD-(Sens-A-Ray®) and a storage phosphor (Digora®) system. 10 1st and 7 2nd mandibular molars, with intact lingual but reduced buccal bone with furcation involvements, were used. Radiographs were first taken with lead markers at the most apical part of the buccal bone and at the cemento-enamel junction. These radiographs were used to establish a radiographically true distance between the CEJ and the buccal bone level. The lead marker at the CEJ served as a reference point for the observers' subsequent estimates of the extent of bone removed, which were made in radiographs without lead markers at the bone level. 1 exposure (400 ms) for the CCD- and 5 (160 ms, 200 ms, 250 ms, 320 ms, 400 ms) for the storage phosphor system were used. Measurements were made in unprocessed (original) and processed images (contrast enhanced and/or high pass filtered). The results showed underestimation of bone loss, but smaller than previously reported for film radiographs. No significant difference was found between the 2 systems when compared at the same exposure. Nor were any significant differences found between unprocessed and processed images or between storage phosphor images from different exposures. We conclude that digital radiographs are comparable to film based radiographs for measurement of buccal bone loss but that lower exposures can be used, especially with the storage phosphor system.     

下颌角肥大女性颅面结构的三维测量

目的：通过对下颌角肥大女性人群颅面结构进行三维测量，发现下颌角肥大人群与正常人群颅面结构的差异。方法：对102例在中国医学科学院整形外科医院颅颌面中心行下颌角截骨整形的患者做三维CT检查，并对其颅面结构进行三维立体测量。结果：通过测量取得下颌角肥大女性群体颅面结构的三维数据，通过与文献中正常人群测量数据比较发现下颌角肥大与正常人群颅面结构的差异。结论：下颌角肥大女性群体颅面三维结构与正常女性人群存在明显差异。     

成人大脑半球星形细胞瘤：CT表现与病理分级的关系及其意义（附70例分析）

对照病理分级结果，分析了７０例成人大脑星形细胞瘤（包括胶质母细胞瘤）的ＣＴ表现，探讨了ＣＴ表现与病理分级的关连及其意义。ＣＴ表现在一定程度上能够反映星形细胞瘤的分化程度，但系多项表现的综合反映，若添入病人的年龄、病史和ＣＴ随访等因素来一并考虑则更为全面；任何单项表现均非良（恶）性的绝对指征，但某些特殊征象如出血、多结节型或波浪形强化、多发（转移）等多见于恶性。比较了病理检查与ＣＴ检查的优缺点，强调了ＣＴ对星形细胞瘤病例术前估价与术后随访的作用。     

肺癌诊断模型的研究

我们针对肺癌的各种检查方法设计了以医院人群为基础的病例对照研究。应用Ｍａｎｔｅｌ－Ｈａｅｎｓｚｅｌ及非条件ｌｏｇｉｓｔｉｃ回归方程进行了单因素及多因素分析。结果表明：在研究对象中，吸烟史、家族史、肿瘤史、Ｘ线检查、ＣＴ检查与肺癌的关系在统计学上有显著意义。ＰＡＴ痰检、ＣＴ检查、Ｘ线检查、主要症状是影响肺癌临床诊断的主要因素。建立肺癌模型，回代结果显示：灵敏度为９３．９２％，特异度为７３．２８％，准确度９０．１９％。这对提高肺癌临床诊断水平，减少漏诊率有着积极的作用。     

APCS系统及其在我院的应用前景分析

医学图像在临床诊断、教学科研等方面正发挥着极其重要的作用。医学影像存档与通信系统(Picture Archiving and Communication Systems,PACS)对医学图像的采集、显示、储存、交换和输出进行数字化处理。本文探讨了PACS的主要功能、特点及其适合本院的可行方案,并试着对其进行了投资效益分析。