移动DR无线遥控延时曝光控制器的设计与研制

目的 本文设计一款具备无线遥控曝光和自动延时曝光的双模式移动DR曝光控制器,取代移动DR手闸功能,以避免X射线对操作员造成电离辐射危害.方法 以STC89C52单片机为主控芯片,以无线射频遥控模块和单片机定时器为触发方式,通过单片机控制继电器通断,取代手闸曝光操作,并以摄像系统实时辅助监控,以实现无线远程可视化曝光操作...     

基于STC15F104E单片机的移动X线机无线延时曝光系统的研制

本文阐述了移动X线机无线延时曝光系统的研制和测试过程,该系统主要由单片机STC15F104E、PC817光耦及信号处理模块、无线遥控(发射/接收)模块、声音报警模块和通信模块组成,具备无线延时曝光的功能。系统测试结果表明,当采用一档继电器吸合3 s,然后二档继电器同时吸合2 s,最后同时放开的方案时,系统应用效果最好,能够满足临床需求。     

无线遥控开关与移动DR的结合应用

本文主要介绍将移动DR传统的手闸线曝光方式改成无线遥控曝光的过程和应用情况。无线遥控装置主要分为电源模块、遥控模块、驱动模块和单片机控制模块。经安装测试,无线装置可有效进行多障碍物隔离下的远距离遥控曝光,遥控曝光距离可达到20 m左右,并且对图像没有影响。通过无线遥控开关操作曝光DR,不但降低了由手闸线曝光开关带来的故障隐患,还提高了工作效率,值得在医疗设备中推广使用。     

床边摄影曝光延时指示灯制作

本文介绍床边摄影曝光延时指示灯的制作电路设计及工作原理.     

菲力蒲Integris V-5000 DSA机在介入术中的技术探讨

我院 1998年引进荷兰菲力蒲公司生产的ＩｎｔｅｇｒｉｓＶ -5 0 0 0ＤＳＡ机 ,在使用中发现几个技术问题。1　ＩｎｔｅｇｒｉｓＶ - 5 0 0 0ＤＳＡ机与ＭＡＲＫ -Ⅴ高压注射器相连动 ,在使用中发现当某些需要延时曝光检查时 ,在高压注射器控制面板上设定了延时时间 ,但未起到延时的作用　　如在脑血管造影时 ,Ｃ臂的旋转是与Ｘ线曝光同时开始 ,而高压注射器与脑血管之间有约 1ｍ～ 1.5ｍ的连接导管 ,需要注药延时 0 .5～ 1秒钟或更长时间后 ,才要求Ｃ臂旋转或床移动 ,Ｘ线球管才曝光。但实际造影时 ,虽然在高压注射器控制面板上设定了延时时…     

岛津SFC－72装置中伺服电路故障检修1例

SFC－72是遥控摇篮胃肠机所配套的一种点片式摄影装置，它由继电器柜、传片箱、载片滑车架和遥控操作台组成。胶片传送及片架移动均由伺服电机驱动，即由胶片传送及片架移动设定与检测电路送出信号至伺服放大电路来控制。现将我院新近遇到的该电路一例故障的检修过程叙述如下，以供同行参考。 故障现象透视正常，点片选择全照射野时，遥控操作台指示正常，曝光正常。但冲洗出来的胶片上半部却有不同宽度的未曝光区域，造成摄影影像不全，以致影响了正确诊断。其间也偶有卡片现象。     

Clinical study of digital radiography (DR) and computed radiography (CR)'exposure condition(unit)

目的 探讨DR摄影与CR摄影曝光条件及对患者的X线辐射剂量.方法 取本院DR照片和CR照片各2 000份,应用Arac等[1]学者的图像评价方法,由两位副主任技师和一位主任技师对照片进行分组分析,统计出甲、乙、丙片及废像率[2],在此基础上进行统计学比较及原因分析,同时对曝光条件做出比较.结果 ①照片质量:DR照片与CR照片差异具有统计学意义,出现非甲级片的主要影响因素主要是人为与外界因素.②摄影条件比较:同一部位DR的曝光剂量与CR的曝光剂量差别同样具有显著性差异.结论 评价DR的优越性,DR数字摄影照片质量明显好于CR,曝光条件比CR低,相对减少了患者的辐射剂量.     

床旁数字化X线摄影﹙DR﹚的临床应用体会

目的探讨移动数字化X线摄影(DR)在危重急诊患者床旁摄影的临床应用价值.方法危重急诊患者200例床旁DR及相关资料根据曝光条件,运用计算机后处理技术对201张DR片的清晰度、对比度、密度等进行统计、分析、评价.结果甲级片89例90张(44.5%),乙级片105例105张(52.5%),丙级片6例6张(3%),没有废片.结论 DR明显提高了危重急诊患者床旁摄影的质量,降低了重复摄影概率,降低了辐射剂量,为患者诊治争取了时间.     

IMIX DR维修过程分析一例

本文介绍了一例芬兰IMIX DR不曝光故障的维修思路及维修过程.     

CR与DR摄影剂量的临床应用研究

目的探讨DR摄影与CR摄影曝光条件及对患者的X线辐射剂量。方法取本院DR照片和CR照片各2 000份,应用Arac等[1]学者的图像评价方法,由两位副主任技师和一位主任技师对照片进行分组分析,统计出甲、乙、丙片及废像率[2],在此基础上进行统计学比较及原因分析,同时对曝光条件做出比较。结果①照片质量:DR照片与CR照片差异具有统计学意义,出现非甲级片的主要影响因素主要是人为与外界因素。②摄影条件比较:同一部位DR的曝光剂量与CR的曝光剂量差别同样具有显著性差异。结论评价DR的优越性,DR数字摄影照片质量明显好于CR,曝光条件比CR低,相对减少了患者的辐射剂量。     

多功能远程移动医疗推车在临床中的应用

目的：实现以病人为目标的病区远程医疗工作站,提高远程服务的科学性和实效性.方法：采用多功能远程移动推车平台,利用无线网络技术,建立高清视音频交互终端、摄像机、显示器、扫描仪、网络通信设备系统,实现远程移动医疗在临床的应用.结果：将远程视频会议终端、移动工作系统以及会诊系统电脑数据处理系统等集成在一起,形成一个远程移动医疗工作站,方便临床在各种场合的应用.结论：解决信息化医疗服务达到病人床边,有效提高医疗效率.     

Development of a Smart Mobile Data Module for Fetal Monitoring in E-Healthcare

The fetal heart rate (FHR) is a marker of fetal well-being in utero (when monitoring maternal and/or fetal pathologies) and during labor. Here, we developed a smart mobile data module for the remote acquisition and transmission (via a Wi-Fi or 4G connection) of FHR recordings, together with a web-based viewer for displaying the FHR datasets on a computer, smartphone or tablet. In order to define the features required by users, we modelled the fetal monitoring procedure (in home and hospital settings) via semi-structured interviews with midwives and obstetricians. Using this information, we developed a mobile data transfer module based on a Raspberry Pi. When connected to a standalone fetal monitor, the module acquires the FHR signal and sends it (via a Wi-Fi or a 3G/4G mobile internet connection) to a secure server within our hospital information system. The archived, digitized signal data are linked to the patient’s electronic medical records. An HTML5/JavaScript web viewer converts the digitized FHR data into easily readable and interpretable graphs for viewing on a computer (running Windows, Linux or MacOS) or a mobile device (running Android, iOS or Windows Phone OS). The data can be viewed in real time or offline. The application includes tools required for correct interpretation of the data (signal loss calculation, scale adjustment, and precise measurements of the signal’s characteristics). We performed a proof-of-concept case study of the transmission, reception and visualization of FHR data for a pregnant woman at 30 weeks of amenorrhea. She was hospitalized in the pregnancy assessment unit and FHR data were acquired three times a day with a Philips Avalon® FM30 fetal monitor. The prototype (Raspberry Pi) was connected to the fetal monitor’s RS232 port. The emission and reception of prerecorded signals were tested and the web server correctly received the signals, and the FHR recording was visualized in real time on a computer, a tablet and smartphones (running Android and iOS) via the web viewer. This process did not perturb the hospital’s computer network. There was no data delay or loss during a 60-min test. The web viewer was tested successfully in the various usage situations. The system was as user-friendly as expected, and enabled rapid, secure archiving. We have developed a system for the acquisition, transmission, recording and visualization of RCF data. Healthcare professionals can view the FHR data remotely on their computer, tablet or smartphone. Integration of FHR data into a hospital information system enables optimal, secure, long-term data archiving.     

对车载移动体检质量的思考

医疗机构开展的车裁移动体检工怍，方便了边远地区的职工群众，为群众节约了时间和费用，但必须重视车载移动体检质量。细致系统的体格检查，检验质量的控制，设备质量的稳定，体检医师的责任心和技术水平是移动体检质量的保证。要结合移动体检的特点确定体检项目，移动体检要注意环保和提高后续服务水平。     

基于物联网技术架构和移动应用的医疗设备定位标识管理系统研究与开发

目的开发一套覆盖医疗设备生命全周期的医疗设备定位标识管理系统。方法用二维码给医疗设备编写唯一身份编号,同时建立智能管理数据库,并应用移动PDA的扫码来实现医疗设备的定位、清点等功能。结果该系统的使用最大限度地解决了医院固定资产账、物对应管理和科室资产清点问题。结论该系统能完善传统模式下医疗设备的管理方法,加强了管理的精准度,提高了管理效率。     

MUX-100DJ移动DR故障分析及处理三例

本文通过分析检修日本岛津MUX-100DJ移动DR三例高频故障,对处理普通移动DR的常见故障维修提供借鉴经验。根据设备运行原理,对机器出现的管球横臂行走速度故障、开机或准备状态下报故障代码“F32”或“F33”以及报“d1”错误代码进行逐一解析,迅速排除故障。我们认识到行业工作者不仅需要迅速解决由元器件老化、使用磨损,缺乏维护保养等因素引起的设备故障,还要结合周期性、预防性维修工作。     

Network Coded Cooperative Communication in a Real-Time Wireless Hospital Sensor Network

The paper presents a network coded cooperative communication (NC-CC) enabled wireless hospital sensor network architecture for monitoring health as well as postural activities of a patient. A wearable device, referred as a smartband is interfaced with pulse rate, body temperature sensors and an accelerometer along with wireless protocol services, such as Bluetooth and Radio-Frequency transceiver and Wi-Fi. The energy efficiency of wearable device is improved by embedding a linear acceleration based transmission duty cycling algorithm (NC-DRDC). The real-time demonstration is carried-out in a hospital environment to evaluate the performance characteristics, such as power spectral density, energy consumption, signal to noise ratio, packet delivery ratio and transmission offset. The resource sharing and energy efficiency features of network coding technique are improved by proposing an algorithm referred as network coding based dynamic retransmit/rebroadcast decision control (LA-TDC). From the experimental results, it is observed that the proposed LA-TDC algorithm reduces network traffic and end-to-end delay by an average of 27.8% and 21.6%, respectively than traditional network coded wireless transmission. The wireless architecture is deployed in a hospital environment and results are then successfully validated.     

车载DR系统在院外大规模胸部健康体检中的应用价值

目的评价车载直接数字摄影技术（DR）在院外大规模胸部健康体检中的应用价值。方法随机抽取我院2012年6~12月车载DR图像和车载传统X线摄影胶片各1 000例及同时段车载X线透视1 000例受检者的检查结果进行对比、分析图象质量、病变检出率及受检者的受照剂量。结果车载DR图像质量好,清晰度高,DR组甲级片率（64.2%）明显高于传统X线摄影组（43.1%）,差异有统计学意义（P〈0.05）,且废片率为0,优于车载传统X摄影;病变检出率车载DR为7.9%,均比传统X摄影的4.6%及X线透视的3.1%高,差异有统计学意义（P〈0.05）,且图像可长期保存,便于对照;受检者个人受照剂量车载DR为（0.50±0.04）m Gy,明显低于传统X线摄影的（2.35±0.70）m Gy和X透视的（8.40±1.08）m Gy,差异有统计学意义（P〈0.05）。结论车载DR使用灵活、方便、高效,病变检出率高,而且明显降低受检者的照射剂量,安全性高,可作为院外健康体检首选的X影像设备之一。     

Novel Approach to Fuzzy-Wavelet ECG Signal Analysis for a Mobile Device

This paper describes a signal processing technique for ECG signal analysis based upon the combination of wavelet analysis and fuzzy c-means clustering. The signal analysis technique is implemented into a biomedical signal diagnostic unit that is the carry on device for the Wireless Nano-Bios Diagnostic System (WNBDS) developed at National Taiwan University. The WNBDS integrates mobile devices and remote data base servers to conduct online monitoring and remote healthcare applications. The signal analysis and diagnostic algorithms in this paper are implemented in an embedded mobile device to conduct mobile biomedical signal diagnostics. At this stage, the Electrocardiogram (ECG or EKG) is analyzed for patient health monitoring. The ECG signal processing is based on the wavelet analysis, and the diagnosis is based on fuzzy clustering. The embedded system is realized with the Windows CE operating system.     

移动医疗推动医疗服务模式的变革

移动医疗技术包括移动医疗设备、移动网络、移动数据终端和移动医疗数据中心,分别起到数据采集、传输、处理和分析的作用。移动医疗的应用包括医院、120急救和远程救治的应用以及在个人和家庭健康保健、慢病治疗的应用。移动医疗具有使用便利、持续观察、无处不在、随处可得的特点,使现有的医疗卫生服务模式出现前所未有的变革。