一种新型宫腔测量装置的研制和临床应用

本文介绍一种新型宫腔测量装置,应用电阻应变原理制出新型传感器,随着在宫腔内移动,传递出电信号由微处理机进行数据处理并绘制图象,打印结果。临床上选择22例患者进行宫腔测量,部分与X 线碘油造影校正值比较,两者结果无显著性差异(P>0.05)。测量绘制的图形能较好地、快速反映宫腔形态,有助于研究正常宫腔的解剖和生理,还可诊断宫腔异常形态,对研制、选择和放置宫内节育器更是一种非常有价值的方法。     

基于小波逆变换合成的心率变异性信号的IPFM模型

本文提出了心率变异性信号的一种改进的积分脉冲频率调制的计算机仿真模型。由于合理地设计了模型的前置部分，从而使得仿真的ＨＲＶ信号的频谱和调制信号的频谱具有一致性。又由于采用小波逆变换的方法合成了ＨＲＶ信号中的１／ｆ部分，从而使得仿真的ＨＲＶ信号的时特征及频域特征均比原有的ＩＰＦＭ模型更近近于实际的ＨＲＶ信号。     

中国卫生系统计算机应用的现状与发展

近10余年来,中国卫生系统计算机应用取得了一定成绩,加速了计算机专业人才的培养,医院信息系统的开发已发展到网络一体化全院级应用听段,卫生防疫、监督信息网已基本形成,医学科技信息网已初具规模,卫生部正着手建设国家医疗卫生信息网络工程,预计在卫生管理信息系统建设、医学科学研究与医学科技信息、电子数据交换与远程医疗服务、医学教育等方面将取得显著进展。     

食物营养成分计算机管理系统的研制

采用目前被认可并广泛使用的ＦｏｘＢａｓｅ２．１０数据库语言将各种最新的营养信息数据储存至计算机，并编制数１０个应用程序，在营养学领域内进行营养成分的计算机管理，为膳食调查、营养治疗、营养监测及咨询等各方面提供省时省力而又新颖、科学、实用的计算机软件。     

Percoll法处理对人精子运动参数的影响

为观察来源于３种不同精液标本精子运动参数的差异及其Ｐｅｒｃｏｌ处理后的变化，本文对新收集的正常精液精子（Ⅰ组），少精及弱精症精子（Ⅱ组）及正常精液冻融精子（Ⅲ组）各１０份，分别于Ｐｅｒｃｏｌ处理前后用电子计算机精液分析仪（Ｃｏｍｐｕｔｅｒａｓｉｓｔｅｄｓｅｍｅｎａｎａｌｙｓｅｒ）进行运动特性分析，记录ＭＯＴ、ＶＳＬ、ＶＣＬ、ＬＩＮ、ＡＬＨ、及ＶＡＰ６项参数，其结果进行统计学分析。Ｐｅｒｃｏｌ处理后，各组精子６项参数值均较处理前提高，差异具有统计学意义（Ｐ＜０．０５～０．００１）。处理前Ⅰ组与Ⅱ、Ⅲ组除ＶＳＬ无显著差异外，余５项参数值均有显著差异。Ⅲ组的ＡＬＨ，ＶＣＬ最高，其它参数Ⅰ组最高。Ｐｅｒｃｏｌ处理后差异值降低。Ｐｅｒｃｏｌ处理后精子运动６项参数值均提高；异常精液精子运动特性与正常精液精子有明显差异；正常精子冷冻复苏后其ＶＣＬ及ＡＬＨ明显提高。     

Is there a need for guidelines for OB/GYN residents to use the laser?

Background and Objective: With the developing technologies and the extensive use of different wavelength lasers for treatment of some gynecologic conditions, many residencies in the United States face pressure to give credentialing to residents wishing to utilize the laser(s). The objective of this study was to assess the need for credentialing. Study Design/Materials and Methods: A survey was sent to all U.S. program directors of obstetrics and gynecology. Results: Of 281 surveys mailed, 138 responded (49.1%); 136 utilized some wavelength laser in the treatment of some gynecologic conditions. The most commonly used laser was the carbon dioxide (CO₂), and the least used was the argon laser. Eighty-four programs (61.8%) had a written policy; 54 (38.2%) did not. Postgraduate courses were necessary in 81 programs (59.6%), leading to some form of credentialing. Conclusions: The vast majority of programs (98.6%) utilized some wavelength laser as a therapeutic modality in gynecology, and 73.5% of the residency programs would like standardized guidelines for residents. © 1995 Wiley-Liss, Inc.     

Use of CT in the evaluation of primary cardiac tumors

Two cases of primary cardiac sarcomas diagnosed with CT are presented. CT demonstrated the origin, extent, and potential pathology of the tumors. In both cases CT provided more specific information for diagnosis and treatment planning than the 2D echocardiography. The advantages of CT in the detection of cardiac tumors as well as its potential advantages over 2D echocardiography are also discussed.     

Moving muscles with microchips, mathematics and models: an update on the 'reverse' model

This paper reviews the current status of our computer model for the management of strabismus and its future direction. Vector analysis was first used in the 1950s for the assessment of strabismus. Robinson's model' was the first computer simulation of ocular motility. Using physiological principles and anatomical approximations, Robinson's model sought to predict the strabismic pattern to be expected from a given injury. The Kault/Stark 'reverse' model works in the opposite direction, to first simulate the given strabismic pattern and then advise the surgery required to restore orthophoria. The surgeon is able to 'trial' various operations and compare the expected postoperative results. An automated system is currently being developed to ease the difficulty in measuring the position of the eyes in all nine positions of gaze. This paper includes three illustrative case reports.     

Magnetic resonance imaging of colloid cysts of the third ventricle

Summary Two cases of colloid cyst of the third ventricle are reported. Their computed tomographic (CT), magnetic resonance (MR) and neuropathological features are presented. The MR findings were different in the two cases for reasons not yet fully explained, full biochemical and biophysical analyses of the cyst contents not being available. Neuropathologically, the only significant difference was the abundant presence of cholesterin crystals in the colloid of case 1 and their absence in case 2. One of our cases is also peculiar from a CT point of view, since it was primarily hypodense and did not enhance on intravenous contrast administration.